The World as Will and Representation

Although time, like space, is the form of knowledge of the subject, yet, just like space, it presents itself as independent of the subject and completely objective. Against our will, or without our knowledge, it goes fast or slow. We ask what o’clock it is; we investigate time, as if it were something quite objective. And what is this objective existence? Not the progress of the stars, or of the clocks, which merely serve to measure the course of time itself, but it is something different from all things, and yet, like them, independent of our will and knowledge. It exists only in the heads of percipient beings, but the uniformity of its course and its independence of the will give it the authority of objectivity.

Time is primarily the form of inner sense. Anticipating the following book, I remark that the only object of inner sense is the individual will of the knowing subject. Time is therefore the form by means of which self-consciousness becomes possible for the individual will, which originally and in itself is without knowledge. In it the nature of the will, which in itself is simple and identical, appears drawn out into a course of life. But just on account of this original simplicity and identity of what thus exhibits itself, its character remains always precisely the same, and hence also the course of life itself retains throughout the same key-note, indeed its multifarious events and scenes are at bottom just like variations of one and the same theme.

The a priori nature of the law of causality has, by Englishmen and Frenchmen, sometimes not been seen at all, sometimes not rightly conceived of; and therefore some of them still prosecute the earlier attempts to find for it an empirical origin. Maine de Biran places this in the experience that the act of will as cause is followed by the movement of the body as effect. But this fact itself is untrue. We certainly do not recognise the really immediate act of will as something different from the action of the body, and the two as connected by the bond of causality; but both are one and indivisible. Between them there is no succession; they are simultaneous. They are one and the same thing, apprehended in a double manner. That which makes itself known to inner apprehension (self-consciousness) as the real act of will exhibits itself at once in external perception, in which the body exists objectively as an action of the body. That physiologically the action of the nerve precedes that of the muscle is here immaterial, for it does not come within self-consciousness; and we are not speaking here of the relation between muscle and nerve, but of that between the act of will and the action of the body. Now this does not present itself as

a causal relation. If these two presented themselves to us as cause and effect their connection would not be so incomprehensible to us as it actually is; for what we understand from its cause we understand as far as there is an understanding of things generally. On the other hand, the movement of our limbs by means of mere acts of will is indeed a miracle of such common occurrence that we no longer observe it; but if we once turn our attention to it we become keenly conscious of the incomprehensibility of the matter, just because in this we have something before us which we do not understand as the effect of a cause. This apprehension, then, could never lead us to the idea of causality, for that never appears in it at all. Maine de Biran himself recognises the perfect simultaneousness of the act of will and the movement (Nouvelles Considérations des Rapports du Physique au Moral, p. 377, 378). In England Thomas Reid (On the First Principles of Contingent Truths, Essay IV. c. 5) already asserted that the knowledge of the causal relation has its ground in the nature of the faculty of knowledge itself. Quite recently Thomas Brown, in his very tediously composed book, “Inquiry into the Relation of Cause and Effect,” 4th edit., 1835, says

much the same thing, that that knowledge springs from an innate, intuitive, and instinctive conviction; thus he is at bottom upon the right path. Quite unpardonable, however, is the crass ignorance on account of which in this book of 476 pages, of which 130 are devoted to the refutation of Hume, absolutely no mention is made of Kant, who cleared up the question more than seventy years ago. If Latin had remained the exclusive language of science such a thing would not have occurred. In spite of Brown’s exposition, which in the main is correct, a modification of the doctrine set up by Maine de Biran, of the empirical origin of the fundamental knowledge of the causal relation, has yet found acceptance in England; for it is not without a certain degree of plausibility. It is this, that we abstract the law of causality from the perceived effect of our own body upon other bodies. This was already refuted by Hume. I, however, have shown that it is untenable in my work, “Ueber den Willen in der Natur” (p. 75 of the second edition, p. 82 of the third), from the fact that since we apprehend both our own and other bodies objectively in spatial perception, the knowledge of causality must already be there, because it is a condition of

such perception. The one genuine proof that we are conscious of the law of causality before all experience lies in the necessity of making a transition from the sensation, which is only empirically given, to its cause, in order that it may become perception of the external world. Therefore I have substituted this proof for the Kantian, the incorrectness of which I have shown. A most full and thorough exposition of the whole of this important subject, which is only touched on here, the a priori nature of the law of causality and the intellectual nature of empirical perception, will be found in my essay on the principle of sufficient reason, § 21, to which I refer, in order to avoid the necessity of repeating here what is said there. I have also shown there the enormous difference between the mere sensation of the senses and the perception of an objective world, and discovered the wide gulf that lies between the two. The law of causality alone can bridge across this gulf, and it presupposes for its application the two other forms which are related to it, space and time. Only by means of these three combined is the objective idea attained to. Now whether the sensation from which we start to arrive at apprehension arises through the resistance which

is suffered by our muscular exertion, or through the impression of light upon the retina, or of sound upon the nerves of the brain, &c. &c., is really a matter of indifference. The sensation always remains a mere datum for the understanding, which alone is capable of apprehending it as the effect of a cause different from itself, which the understanding now perceives as external, i.e., as something occupying and filling space, which is also a form inherent in the intellect prior to all experience. Without this intellectual operation, for which the forms must lie ready in us, the perception of an objective, external world could never arise from a mere sensation within our skin. How can it ever be supposed that the mere feeling of being hindered in intended motion, which occurs also in lameness, could be sufficient for this? We may add to this that before I attempt to affect external things they must necessarily have affected me as motives. But this almost presupposes the apprehension of the external world. According to the theory in question (as I have remarked in the place referred to above), a man born without arms and legs could never attain to the idea of causality, and consequently could never arrive at the apprehension of the external world. But that this is not

the case is proved by a fact communicated in Froriep’s Notizen, July 1838, No. 133—the detailed account, accompanied by a likeness, of an Esthonian girl, Eva Lauk, then fourteen years old, who was born entirely without arms or legs. The account concludes with these words: “According to the evidence of her mother, her mental development had been quite as quick as that of her brothers and sisters; she attained just as soon as they did to a correct judgment of size and distance, yet without the assistance of hands.—Dorpat, 1st March 1838, Dr. A. Hueck.”

Hume’s doctrine also, that the conception of causality arises from the custom of seeing two states constantly following each other, finds a practical refutation in the oldest of all successions, that of day and night, which no one has ever held to be cause and effect of each other. And the same succession also refutes Kant’s false assertion that the objective reality of a succession is only known when we apprehend the two succeeding events as standing in the relation of cause and effect to each other. Indeed the converse of this doctrine of Kant’s is true. We know which of the two connected events is the cause and which the effect, empirically, only in the succession. Again, on the other hand, the absurd assertion of several professors of philosophy in our own day that cause and effect are simultaneous can be refuted by the fact that in cases in which the succession cannot be perceived on account of its great rapidity, we yet assume it with certainty a priori, and with it the lapse of a certain time. Thus, for example, we know that a certain time must elapse between the falling of the flint and the projection of the bullet, although we cannot perceive it, and that this time must further be divided between several events that occur

in a strictly determined succession—the falling of the flint, the striking of the spark, ignition, the spread of the fire, the explosion, and the projection of the bullet. No man ever perceived this succession of events; but because we know which is the cause of the others, we thereby also know which must precede the others in time, and consequently also that during the course of the whole series a certain time must elapse, although it is so short that it escapes our empirical apprehension; for no one will assert that the projection of the bullet is actually simultaneous with the falling of the flint. Thus not only the law of causality, but also its relation to time, and the necessity of the succession of cause and effect, is known to us a priori. If we know which of two events is the cause and which is the effect, we also know which precedes the other in time; if, on the contrary, we do not know which is cause and which effect, but only know in general that they are causally connected, we seek to discover the succession empirically, and according to that we determine which is the cause and which the effect. The falseness of the assertion that cause and effect are simultaneous further appears from the following consideration.

An unbroken chain of causes and effects fills the whole of time. (For if this chain were broken the world would stand still, or in order to set it in motion again an effect without a cause would have to appear.) Now if every effect were simultaneous with its cause, then every effect would be moved up into the time of its cause, and a chain of causes and effects containing as many links as before would fill no time at all, still less an infinite time, but would be all together in one moment. Thus, under the assumption that cause and effect are simultaneous, the course of the world shrinks up into an affair of a moment. This proof is analogous to the proof that every sheet of paper must have a certain thickness, because otherwise the whole book would have none. To say when the cause ceases and the effect begins is in almost all cases difficult, and often impossible. For the changes (i.e., the succession of states) are continuous, like the time which they fill, and therefore also, like it, they are infinitely divisible. But their succession is as necessarily determined and as unmistakable as that of the moments of time itself, and each of them is called, with reference to the one which precedes it, “effect,”

and with reference to the one which follows it, “cause.”

Every change in the material world can only take place because another has immediately preceded it: this is the true and the whole content of the law of causality. But no conception has been more misused in philosophy than that of cause, by means of the favourite trick or blunder of conceiving it too widely, taking it too generally, through abstract thinking. Since Scholasticism, indeed properly since Plato and Aristotle, philosophy has been for the most part a systematic misuse of general conceptions. Such, for example, are substance, ground, cause, the good, perfection, necessity, and very many others. A tendency of the mind to work with such abstract and too widely comprehended conceptions has shown itself almost at all times. It may ultimately rest upon a certain indolence of the intellect, which finds it too difficult a task to be constantly controlling thought by perception. By degrees such unduly wide conceptions come to be used almost like algebraical symbols, and tossed about like them, and thus philosophy is reduced to a mere process of combination, a kind of reckoning which (like all calculations) employs and demands only the lower faculties. Indeed there finally results from this a mere juggling with words, of which the most shocking example is afforded us by the mind-destroying Hegelism, in which it is carried to

the extent of pure nonsense. But Scholasticism also often degenerated into word-juggling. Nay even the “Topi” of Aristotle—very abstract principles, conceived with absolute generality, which one could apply to the most different kinds of subjects, and always bring into the field in arguing either pro or contra—have also their origin in this misuse of general conceptions. We find innumerable examples of the way the Schoolmen worked with such abstractions in their writings, especially in those of Thomas Aquinas. But philosophy really pursued the path which was entered on by the Schoolmen down to the time of Locke and Kant, who at last bethought themselves as to the origin of conceptions. Indeed we find Kant himself, in his earlier years, still upon that path, in his “Proof of the Existence of God” (p. 191 of the first volume of Rosenkranz’s edition), where the conceptions substance, ground, reality, are used in such a way as would never have been possible if he had gone back to the source of these conceptions and to their true content which is determined thereby. For then he would have found as the source and content of substance simply matter, of ground (if things of the real world are in question) simply cause, that is, the prior change which brings about the later change, &c. It is

true that in this case such an investigation would not have led to the intended result. But everywhere, as here, such unduly wide conceptions, under which, therefore, more was subsumed than their true content would have justified, there have arisen false principles, and from these false systems. Spinoza’s whole method of demonstration rests upon such uninvestigated and too widely comprehended conceptions. Now here lies the great merit of Locke, who, in order to counteract all that dogmatic unreality, insisted upon the investigation of the origin of the conceptions, and thus led back to perception and experience. Bacon had worked in a similar frame of mind, yet more with reference to Physics than to Metaphysics. Kant followed the path entered upon by Locke, but in a higher sense and much further, as has already been mentioned above. To the men of mere show who succeeded in diverting the attention of the public from Kant to themselves the results obtained by Locke and Kant were inconvenient. But in such a case they know how to ignore both the dead and the living. Thus without hesitation they forsook the only right path which had at last been found by those wise men, and philosophised at random with all kinds of indiscriminately collected conceptions, unconcerned as to their origin and content, till at last

the substance of the Hegelian philosophy, wise beyond measure, was that the conceptions had no origin at all, but were rather themselves the origin and source of things. But Kant has erred in this respect. He has too much neglected empirical perception for the sake of pure perception—a point which I have fully discussed in my criticism of his philosophy. With me perception is throughout the source of all knowledge. I early recognised the misleading and insidious nature of abstractions, and in 1813, in my essay on the principle of sufficient reason, I pointed out the difference of the relations which are thought under this conception. General conceptions must indeed be the material in which philosophy deposits and stores up its knowledge, but not the source from which it draws it; the terminus ad quem, not a quo. It is not, as Kant defines it, a science drawn from conceptions, but a science in conceptions. Thus the conception of causality also, with which we are here concerned, has always been taken far too widely by philosophers for the furtherance of their dogmatic ends, and much was imported into it which does not belong to it at all. Hence arose propositions such as the following: “All that is has its cause”—“the effect cannot contain more than the cause, thus nothing that

was not also in the cause”—“causa est nobilior suo effectu,” and many others just as unwarranted. The following subtilty of that insipid gossip Proclus affords an elaborate and specially lucid example of this. It occurs in his “Institutio Theologica,” § 76: “Παν το απο ακινητου γιγνομενον αιτιας, αμεταβλητον εχει την ὑπαρξιν; παν δε το απο κινουμενης, μεταβλητην; ει γαρ ακινητον εστι παντῃ το ποιουν, ου δια κινησεως, αλλ᾽ αυτῳ τῳ ειναι παραγει το δευτερον αφ᾽ ἑαυτου.” (_Quidquid ab immobili causa manat, immutabilem habet essentiam [substantiam]. Quidquid vero a mobili causa manat, essentiam habet mutabilem. Si enim illud, quod aliquid facit, est prorsus immobile, non per motum, sed per ipsum Esse producit ipsum secundum ex se ipso._) Excellent! But just show me a cause which is not itself set in motion: it is simply impossible. But here, as in so many cases, abstraction has thought away all determinations down to that one which it is desired to make use of without regard to the fact that the latter cannot exist without the former. The only correct expression of the law of causality is this: Every change has its cause in another change which immediately precedes it. If something happens, i.e., if a new state of things appears, i.e., if something is changed, then something else must have changed immediately before, and

something else again before this, and so on ad infinitum, for a first cause is as impossible to conceive as a beginning of time or a limit of space. More than this the law of causality does not assert. Thus its claims only arise in the case of changes. So long as nothing changes there can be no question of a cause. For there is no a priori ground for inferring from the existence of given things, i.e., states of matter, their previous non-existence, and from this again their coming into being, that is to say, there is no a priori ground for inferring a change. Therefore the mere existence of a thing does not justify us in inferring that it has a cause. Yet there may be a posteriori reasons, that is, reasons drawn from previous experience, for the assumption that the present state or condition did not always exist, but has only come into existence in consequence of another state, and therefore by means of a change, the cause of which is then to be sought, and also the cause of this cause. Here then we are involved in the infinite regressus to which the application of the law of causality always leads. We said above: “Things, i.e., states or conditions of matter,” for change and causality have

only to do with states or conditions. It is these states which we understand by form, in the wider sense; and only the forms change, the matter is permanent. Thus it is only the form which is subject to the law of causality. But the form constitutes the thing, i.e., it is the ground of the difference of things; while matter must be thought as the same in all. Therefore the Schoolmen said, “Forma dat esse rei;” more accurately this proposition would run: Forma dat rei essentiam, materia existentiam. Therefore the question as to the cause of a thing always concerns merely its form, i.e., its state or quality, and not its matter, and indeed only the former so far as we have grounds for assuming that it has not always existed, but has come into being by means of a change. The union of form and matter, or of essentia and existentia, gives the concrete, which is always particular; thus, the thing. And it is the forms whose union with matter, i.e., whose appearance in matter by means of a change, are subject to the law of causality. By taking the conception too widely in the abstract the mistake slipped in of extending causality to the thing absolutely, that is, to its whole inner nature and existence, thus also

to matter, and ultimately it was thought justifiable to ask for a cause of the world itself. This is the origin of the cosmological proof. This proof begins by inferring from the existence of the world its non-existence, which preceded its existence, and such an inference is quite unjustifiable; it ends, however, with the most fearful inconsistency, for it does away altogether with the law of causality, from which alone it derives all its evidencing power, for it stops at a first cause, and will not go further; thus ends, as it were, by committing parricide, as the bees kill the drones after they have served their end. All the talk about the absolute is referable to a shamefast, and therefore disguised cosmological proof, which, in the face of the “Critique of Pure Reason,” has passed for philosophy in Germany for the last sixty years. What does the absolute mean? Something that is, and of which (under pain of punishment) we dare not ask further whence and why it is. A precious rarity for professors of philosophy! In the case, however, of the honestly expressed cosmological proof, through the assumption of a first cause, and therefore of a first beginning in a time which has absolutely no beginning, this beginning is always pushed further back by the question: Why not

earlier? And so far back indeed that one never gets down from it to the present, but is always marvelling that the present itself did not occur already millions of years ago. In general, then, the law of causality applies to all things in the world, but not to the world itself, for it is immanent in the world, not transcendent; with it it comes into action, and with it it is abolished. This depends ultimately upon the fact that it belongs to the mere form of our understanding, like the whole of the objective world, which accordingly is merely phenomenal, and is conditioned by the understanding. Thus the law of causality has full application, without any exception, to all things in the world, of course in respect of their form, to the variation of these forms, and thus to their changes. It is valid for the actions of men as for the impact of a stone, yet, as we have said always, merely with regard to events, to changes. But if we abstract from its origin in the understanding and try to look at it as purely objective, it will be found in ultimate analysis to depend upon the fact that everything that acts does so by virtue of its original, and therefore eternal or timeless, power; therefore its

present effect would necessarily have occurred infinitely earlier, that is, before all conceivable time, but that it lacked the temporal condition. This temporal condition is the occasion, i.e., the cause, on account of which alone the effect only takes place now, but now takes place necessarily; the cause assigns it its place in time.

But in consequence of that unduly wide view in abstract thought of the conception cause, which was considered above, it has been confounded with the conception of force. This is something completely different from the cause, but yet is that which imparts to every cause its causality, i.e., the capability of producing an effect. I have explained this fully and thoroughly in the second book of the first volume, also in “The Will in Nature,” and finally also in the second edition of the essay on the principle of sufficient reason, § 20, p. 44 (third edition, p. 45). This confusion is to be found in its most aggravated form in Maine de Biran’s book mentioned above, and this is dealt with more fully in the place last referred to; but apart from this it is also very common; for example, when people seek for the cause of any original force, such as gravitation. Kant himself (Über den Einzig Möglichen Beweisgrund, vol. i. p. 211-215 of Rosenkranz’s edition) calls the forces of nature “efficient causes,” and says “gravity is a cause.” Yet it is impossible to see to the bottom of his thought so long as force and cause are not distinctly recognised as completely different. But the use of abstract conceptions leads very easily to their confusion if the

consideration of their origin is set aside. The knowledge of causes and effects, always perceptive, which rests on the form of the understanding, is neglected in order to stick to the abstraction cause. In this way alone is the conception of causality, with all its simplicity, so very frequently wrongly apprehended. Therefore even in Aristotle (“Metaph.,” iv. 2) we find causes divided into four classes which are utterly falsely, and indeed crudely conceived. Compare with it my classification of causes as set forth for the first time in my essay on sight and colour, chap. 1, and touched upon briefly in the sixth paragraph of the first volume of the present work, but expounded at full length in my prize essay on the freedom of the will, p. 30-33. Two things in nature remain untouched by that chain of causality which stretches into infinity in both directions; these are matter and the forces of nature. They are both conditions of causality, while everything else is conditioned by it. For the one (matter) is that in which the states and their changes appear; the other (forces of nature) is that by virtue of which alone they can appear at all. Here, however, one must remember that in the second book, and later and more thoroughly in “The Will in Nature,” the

natural forces are shown to be identical with the will in us; but matter appears as the mere visibility of the will; so that ultimately it also may in a certain sense be regarded as identical with the will.

On the other hand, not less true and correct is what is explained in § 4 of the first book, and still better in the second edition of the essay on the principle of sufficient reason at the end of § 21, p. 77 (third edition, p. 82), that matter is causality itself objectively comprehended, for its entire nature consists in acting in general, so that it itself is thus the activity (ενεργεια = reality) of things generally, as it were the abstraction of all their different kinds of acting. Accordingly, since the essence, essentia, of matter consists in action in general, and the reality, existentia, of things consists in their materiality, which thus again is one with action in general, it may be asserted of matter that in it existentia and essentia unite and are one, for it has no other attribute than existence itself in general and independent of all fuller definitions of it. On the other hand, all empirically given matter, thus all material or matter in the special sense (which our ignorant materialists at the present day confound with matter), has already entered the framework of the forms and manifests itself only through their qualities and accidents, because in experience every action is of quite a definite and special kind, and is never merely general. Therefore pure matter is an object of thought alone, not of perception, which led Plotinus (Enneas II., lib. iv., c. 8 & 9) and Giordano Bruno (Della Causa, dial. 4) to make the paradoxical assertion that matter has no extension, for extension is inseparable from the form, and that therefore it is incorporeal. Yet Aristotle had already taught that it is not a body although it is corporeal: “σωμα μεν ουκ αν ειη, σωματικη δε” (Stob. Ecl., lib. i., c. 12, § 5). In reality we think under pure matter only action, in the abstract, quite independent of the kind of action, thus pure causality itself; and as such it is not an object but a condition of experience, just like space and time. This is the reason why in the accompanying table of our pure a priori knowledge matter is able to take the place of causality, and therefore appears along with space and time as the third pure form, and therefore as dependent on our intellect.

This table contains all the fundamental truths which are rooted in our perceptive or intuitive knowledge a priori, expressed as first principles independent of each other. What is special, however, what forms the content of arithmetic and geometry, is not given here, nor yet what only results from the union and application of those formal principles of knowledge. This is the subject of the “Metaphysical First Principles of Natural Science” expounded by Kant, to which this table in some measure forms the propædutic and introduction, and with which it therefore stands in direct connection. In this table I have primarily had in view the very remarkable parallelism of those a priori principles of knowledge which form the framework of all experience, but specially also the fact that, as I have explained in § 4 of the first volume, matter (and also causality) is to be regarded as a combination, or if it is preferred, an amalgamation, of space and time. In agreement with this, we find that what geometry is for the pure perception or intuition of space, and arithmetic for that of time, Kant’s phoronomy is for the pure perception or intuition of the two united. For matter is primarily that which is movable in space. The mathematical point cannot even be conceived as movable, as Aristotle has shown (“Physics,” vi. 10). This philosopher also himself provided the first example of such a science, for in the fifth and sixth books of his “Physics” he determined a priori the laws of rest and motion.

Now this table may be regarded at pleasure either as a collection of the eternal laws of the world, and therefore as the basis of our ontology, or as a chapter of the physiology of the brain, according as one assumes the realistic or the idealistic point of view; but the second is in the last instance right. On this point, indeed, we have already come to an understanding in the first chapter; yet I wish further to illustrate it specially by an example. Aristotle’s book “De Xenophane,” &c., commences with these weighty words of Xenophanes: “Αϊδιον ειναι φησιν, ει τι εστιν, ειπερ μη ενδεχεται γενεσθαι μηδεν εκ μηδενος.” (Æternum esse, inquit, quicquid est, siquidem fieri non potest, ut ex nihilo quippiam existat.) Here, then, Xenophanes judges as to the origin of things, as regards its possibility, and of this origin he can have had no experience, even by analogy; nor indeed does he appeal to experience, but judges apodictically, and therefore a priori. How can he do this if as a stranger he looks from without into a world that exists purely objectively, that is, independently of his knowledge? How can he, an ephemeral being hurrying past, to whom only a hasty glance into such a world is permitted, judge apodictically, a priori and without experience concerning that world, the possibility of its existence and origin? The solution of this riddle is that the man has only to do with his own ideas, which as such are the work of his brain, and the constitution of which is merely the manner or mode in which alone the function of his brain can be fulfilled, i.e., the form of his perception. He thus judges only as to the phenomena of his own brain, and declares what enters into its forms, time, space, and causality, and what does not. In this he is perfectly at home and speaks apodictically. In a like sense, then, the following table of the Prædicabilia a priori of time, space, and matter is to be taken:—

Of Time. Of Space. Of Matter. (1) There is only (1) There is only (1) There is only one Time, and all one Space, and all one Matter, and different times are different spaces are all different parts of it. parts of it. materials are different states of matter; as such it is called Substance. (2) Different times (2) Different spaces (2) Different are not simultaneous are not successive matters (materials) but successive. but simultaneous. are not so through substance but through accidents. (3) Time cannot be (3) Space cannot be (3) Annihilation of thought away, but thought away, but matter is everything can be everything can be inconceivable, but thought away from thought away from annihilation of all it. it. its forms and qualities is conceivable. (4) Time has three (4) Space has three (4) Matter exists, divisions, the past, dimensions—height, i.e., acts in all the present, and the breadth, and length. the dimensions of future, which space and throughout constitute two the whole length of directions and a time, and thus these centre of two are united and indifference. thereby filled. In this consists the true nature of matter; thus it is through and through causality. (5) Time is (5) Space is (5) Matter is infinitely infinitely infinitely divisible. divisible. divisible. (6) Time is (6) Space is (6)

Matter is homogeneous and a homogeneous and a homogeneous and a Continuum, i.e., Continuum, i.e., Continuum, i.e., no one of its parts no one of its parts it does not consist is different from is different from of originally the rest, nor the rest, nor different separated from it by separated from it by (homoiomeria) or anything that is not anything that is not originally separated time. space. parts (atoms); it is therefore not composed of parts, which would necessarily be separated by something that was not matter. (7) Time has no (7) Space has no (7) Matter has no beginning and no limits, but all origin and no end, end, but all limits are in it. but all coming into beginning and end is being and passing in it. away are in it. (8) By reason of (8) By reason of (8) By reason of time we count. space we measure. matter we weigh. (9) Rhythm is only (9) Symmetry is only (9) Equilibrium is in time. in space. only in matter. (10) We know the (10) We know the (10) We know the laws of time _a laws of space a laws of the priori. priori_. substance of all accidents a priori. (11) Time can be (11) Space is (11) Matter can only perceived _a immediately be thought

a priori, although perceptible a priori. only in the form of priori_. a line. (12) Time has no (12) Space can never (12) The accidents permanence, but pass away, but change; the passes away as soon endures through all substance remains. as it is there. time. (13) Time never (13) Space is (13) Matter is rests. immovable. indifferent to rest and motion, i.e., it is originally disposed towards neither of the two. (14) Everything that (14) Everything that (14) Everything exists in time has exists in space has material has the duration. a position. capacity for action. (15) Time has no (15) Space has no (15) Matter is what duration, but all motion, but all is permanent in time duration is in it, motion is in it, and and movable in and is the it is the change of space; by the persistence of what position of what is comparison of what is permanent in moved, in contrast rests with what is contrast with its with its unbroken moved we measure restless course. rest. duration. (16) All motion is (16) All motion is (16) All motion is only possible in only possible in only possible to time. space. matter. (17) Velocity is, in (17) Velocity is, in (17) The magnitude equal spaces, in equal times, in of the motion, the

inverse proportion direct proportion to velocity being to the time. the space. equal, is in direct geometrical proportion to the matter (mass). (18) Time is not (18) Space is (18) Matter as such measurable directly measurable directly (mass) is through itself, but through itself, and measurable, i.e., only indirectly indirectly through determinable as through motion, motion, which is in regards its quantity which is in space time and space only indirectly, and time together: together; hence, for only through the thus the motion of example, an hour’s amount of the motion the sun and of the journey, and the which it receives clock measure time. distance of the and imparts when it fixed stars is repelled or expressed as the attracted. travelling of light for so many years. (19) Time is (19) Space is (19) Matter is omnipresent. Every eternal. Every part absolute. That is, part of time is of it exists always. it neither comes everywhere, i.e., into being nor in all space, at passes away, and once. thus its quantity can neither be increased nor diminished. (20) In time taken (20) In space taken (20, 21) Matter by itself everything by itself everything unites the ceaseless would be in would be flight of time with succession. simultaneous. the rigid immobility of space; therefore it is the permanent substance

of the changing accidents. Causality determines this change for every place at every time, and thereby combines time and space, and constitutes the whole nature of matter. (21) Time makes the (21) Space makes the change of accidents permanence of possible. substance possible. (22) Every part of (22) No part of (22) For matter is time contains all space contains the both permanent and parts of matter. same matter as impenetrable. another. (23) Time is the (23) Space is the (23) Individuals are _principium principium material. individuationis. individuationis_. (24) The now has no (24) The point has (24) The atom has no duration. no extension. reality. (25) Time in itself (25) Space in itself (25) Matter in is empty and without is empty and without itself is without properties. properties. form and quality, and likewise inert, i.e., indifferent to rest or motion, thus without properties. (26) Every moment is (26) By the position (26) Every change in conditioned by the of every limit in matter can take preceding moment, space with reference place only on and is only because to any other limit, account of another the latter has its position with change which ceased to be. reference to every preceded it; and (Principle of possible limit is therefore a first sufficient reason of precisely change, and thus existence in

determined. also a first state time.—See my essay (Principle of of matter, is just on the principle of sufficient reason of as inconceivable as sufficient reason.) existence in space.) a beginning of time or a limit of space. (Principle of sufficient reason of becoming.) (27) Time makes (27) Space makes (27) Matter, as that arithmetic possible. geometry possible. which is movable in space, makes phoronomy possible. (28) The simple (28) The simple (28) The simple element in element in geometry element in phoronomy arithmetic is unity. is the point. is the atom.

Notes to the Annexed Table. (1) To No. 4 of Matter.

The essence of matter is acting, it is acting itself, in the abstract, thus acting in general apart from all difference of the kind of action: it is through and through causality. On this account it is itself, as regards its existence, not subject to the law of causality, and thus has neither come into being nor passes away, for otherwise the law of causality would be applied to itself. Since now causality is known to us a priori, the conception of matter, as the indestructible basis of all that exists, can so far take its place in the knowledge we possess a priori, inasmuch as it is only the realisation of an a priori form of our knowledge. For as soon as we see anything that acts or is causally efficient it presents itself eo ipso as material, and conversely anything material presents itself as necessarily active or causally efficient. They are in fact interchangeable conceptions. Therefore the word “actual” is used as synonymous with “material;” and also the Greek κατ᾽ ενεργειαν, in opposition to κατα δυναμιν, reveals the same source, for ενεργεια signifies action in general; so also with actu in opposition to potentia, and the English “actually” for “wirklich.” What is called space-occupation, or impenetrability, and regarded as the essential predicate of body (i.e. of what is

material), is merely that kind of action which belongs to all bodies without exception, the mechanical. It is this universality alone, by virtue of which it belongs to the conception of body, and follows a priori from this conception, and therefore cannot be thought away from it without doing away with the conception itself—it is this, I say, that distinguishes it from any other kind of action, such as that of electricity or chemistry, or light or heat. Kant has very accurately analysed this space-occupation of the mechanical mode of activity into repulsive and attractive force, just as a given mechanical force is analysed into two others by means of the parallelogram of forces. But this is really only the thoughtful analysis of the phenomenon into its two constituent parts. The two forces in conjunction exhibit the body within its own limits, that is, in a definite volume, while the one alone would diffuse it into infinity, and the other alone would contract it to a point. Notwithstanding this reciprocal balancing or neutralisation, the body still acts upon other bodies which contest its space with the first force, repelling them, and with the other force, in gravitation, attracting all bodies in general. So that the two forces are not extinguished in their product, as, for instance, two equal forces acting

in different directions, or +E and -E, or oxygen and hydrogen in water. That impenetrability and gravity really exactly coincide is shown by their empirical inseparableness, in that the one never appears without the other, although we can separate them in thought.

I must not, however, omit to mention that the doctrine of Kant referred to, which forms the fundamental thought of the second part of his “Metaphysical First Principles of Natural Science,” thus of the Dynamics, was distinctly and fully expounded before Kant by Priestley, in his excellent “Disquisitions on Matter and Spirit,” § 1 and 2, a book which appeared in 1777, and the second edition in 1782, while Kant’s work was published in 1786. Unconscious recollection may certainly be assumed in the case of subsidiary thoughts, flashes of wit, comparisons, &c., but not in the case of the principal and fundamental thought. Shall we then believe that Kant silently appropriated such important thoughts of another man? and this from a book which at that time was new? Or that this book was unknown to him, and that the same thoughts sprang up in two minds within a short time? The explanation, also, which Kant gives, in the “Metaphysical First Principles of Natural Science” (first edition, p. 88; Rosenkranz’s edition, p. 384), of the real difference between fluids and solids, is in substance already to be found in Kaspar Freidr. Wolff’s “Theory of Generation,” Berlin 1764, p. 132. But what are we to say if we find Kant’s most important and brilliant doctrine, that of the ideality of space and

the merely phenomenal existence of the corporeal world, already expressed by Maupertuis thirty years earlier? This will be found more fully referred to in Frauenstädt’s letters on my philosophy, Letter 14. Maupertuis expresses this paradoxical doctrine so decidedly, and yet without adducing any proof of it, that one must suppose that he also took it from somewhere else. It is very desirable that the matter should be further investigated, and as this would demand tiresome and extensive researches, some German Academy might very well make the question the subject of a prize essay. Now in the same relation as that in which Kant here stands to Priestley, and perhaps also to Kaspar Wolff, and Maupertuis or his predecessor, Laplace stands to Kant. For the principal and fundamental thought of Laplace’s admirable and certainly correct theory of the origin of the planetary system, which is set forth in his “Exposition du Système du Monde,” liv. v. c. 2, was expressed by Kant nearly fifty years before, in 1755, in his “Naturgeschichte und Theorie des Himmels,” and more fully in 1763 in his “Einzig möglichen Beweisgrund des Daseyns Gottes,” ch. 7. Moreover, in the later work he gives us to understand that Lambert in his “Kosmologischen Briefen,” 1761, tacitly adopted that doctrine from him, and these letters at the same time also

appeared in French (Lettres Cosmologiques sur la Constitution de l’Univers). We are therefore obliged to assume that Laplace knew that Kantian doctrine. Certainly he expounds the matter more thoroughly, strikingly, and fully, and at the same time more simply than Kant, as is natural from his more profound astronomical knowledge; yet in the main it is to be found clearly expressed in Kant, and on account of the importance of the matter, would alone have been sufficient to make his name immortal. It cannot but disturb us very much if we find minds of the first order under suspicion of dishonesty, which would be a scandal to those of the lowest order. For we feel that theft is even more inexcusable in a rich man than in a poor one. We dare not, however, be silent; for here we are posterity, and must be just, as we hope that posterity will some day be just to us. Therefore, as a third example, I will add to these cases, that the fundamental thoughts of the “Metamorphosis of Plants,” by Goethe, were already expressed by Kaspar Wolff in 1764 in his “Theory of Generation,” p. 148, 229, 243, &c. Indeed, is it otherwise with the system of gravitation? the discovery of which is on the Continent of Europe always ascribed to Newton,

while in England the learned at least know very well that it belongs to Robert Hooke, who in the year 1666, in a “Communication to the Royal Society,” expounds it quite distinctly, although only as an hypothesis and without proof. The principal passage of this communication is quoted in Dugald Stewart’s “Philosophy of the Human Mind,” and is probably taken from Robert Hooke’s Posthumous Works. The history of the matter, and how Newton got into difficulty by it, is also to be found in the “Biographie Universelle,” article Newton. Hooke’s priority is treated as an established fact in a short history of astronomy, Quarterly Review, August 1828. Further details on this subject are to be found in my “Parerga,” vol. ii., § 86 (second edition, § 88). The story of the fall of an apple is a fable as groundless as it is popular, and is quite without authority.

(2) To No. 18 of Matter. The quantity of a motion (quantitas motus, already in Descartes) is the product of the mass into the velocity.

This law is the basis not only of the doctrine of impact in mechanics, but also of that of equilibrium in statics. From the force of impact which two bodies with the same velocity exert the relation of their masses to each other may be determined. Thus of two hammers striking with the same velocity, the one which has the greater mass will drive the nail deeper into the wall or the post deeper into the earth. For example, a hammer weighing six pounds with a velocity = 6 effects as much as a hammer weighing three pounds with a velocity = 12, for in both cases the quantity of motion or the momentum = 36. Of two balls rolling at the same pace, the one which has the greater mass will impel a third ball at rest to a greater distance than the ball of less mass can. For the mass of the first multiplied by the same velocity gives a greater quantity of motion, or a greater momentum. The cannon carries further than the gun, because an equal velocity communicated to a much greater mass gives a much greater quantity of motion, which resists longer the retarding effect of gravity. For the same reason, the same arm will throw a lead bullet further than a stone one of equal magnitude, or a large stone further than quite a small one. And therefore also a case-shot does not carry so far as a ball-shot.

The same law lies at the foundation of the theory of the lever and of the balance. For here also the smaller mass, on the longer arm of the lever or beam of the balance, has a greater velocity in falling; and multiplied by this it may be equal to, or indeed exceed, the quantity of motion or the momentum of the greater mass at the shorter arm of the lever. In the state of rest brought about by equilibrium this velocity exists merely in intention or virtually, potentiâ, not actu; but it acts just as well as actu, which is very remarkable. The following explanation will be more easily understood now that these truths have been called to mind.

The quantity of a given matter can only be estimated in general according to its force, and its force can only be known in its expression. Now when we are considering matter only as regards its quantity, not its quality, this expression can only be mechanical, i.e., it can only consist in motion which it imparts to other matter. For only in motion does the force of matter become, so to speak, alive; hence the expression vis viva for the manifestation of force of matter in motion. Accordingly the only measure of the quantity of a given matter is the quantity of its motion, or its momentum. In this, however, if it is given, the quantity of matter still appears in conjunction and amalgamated with its other factor, velocity. Therefore if we want to know the quantity of matter (the mass) this other factor must be eliminated. Now the velocity is known directly; for it is S/T. But the other factor, which remains when this is eliminated, can always be known only relatively in comparison with other masses, which again can only be known themselves by means of the quantity of their motion, or their momentum, thus in their combination with velocity. We must therefore compare one quantity of motion with the other, and then subtract the velocity from both,

in order to see how much each of them owed to its mass. This is done by weighing the masses against each other, in which that quantity of motion is compared which, in each of the two masses, calls forth the attractive power of the earth that acts upon both only in proportion to their quantity. Therefore there are two kinds of weighing. Either we impart to the two masses to be compared equal velocity, in order to find out which of the two now communicates motion to the other, thus itself has a greater quantity of motion, which, since the velocity is the same on both sides, is to be ascribed to the other factor of the quantity of motion or the momentum, thus to the mass (common balance). Or we weigh, by investigating how much more velocity the one mass must receive than the other has, in order to be equal to the latter in quantity of motion or momentum, and therefore allow no more motion to be communicated to itself by the other; for then in proportion as its velocity must exceed that of the other, its mass, i.e., the quantity of its matter, is less than that of the other (steelyard). This estimation of masses by weighing depends upon the favourable circumstance that the moving force,

in itself, acts upon both quite equally, and each of the two is in a position to communicate to the other directly its surplus quantity of motion or momentum, so that it becomes visible.

The substance of these doctrines has long ago been expressed by Newton and Kant, but through the connection and the clearness of this exposition I believe I have made it more intelligible, so that that insight is possible for all which I regarded as necessary for the justification of proposition No. 18. Second Half. The Doctrine of the Abstract Idea, or Thinking. Chapter V.(16) On The Irrational Intellect. It must be possible to arrive at a complete knowledge of the consciousness of the brutes, for we can construct it by abstracting certain properties of our own consciousness. On the other hand, there enters into the consciousness of the brute instinct, which is much more developed in all of them than in man, and in some of them extends to what we call mechanical instinct.

The brutes have understanding without having reason, and therefore they have knowledge of perception but no abstract knowledge. They apprehend correctly, and also grasp the immediate causal connection, in the case of the higher species even through several links of its chain, but they do not, properly speaking, think. For they lack conceptions, that is, abstract ideas. The first consequence of this, however, is the want of a proper memory, which applies even to the most sagacious of the brutes, and it is just this which constitutes the principal difference between their consciousness and that of men. Perfect intelligence depends upon the distinct consciousness of the past and of the eventual future, as such, and in connection with the present. The special memory which this demands is therefore an orderly, connected, and thinking retrospective recollection. This, however, is only possible by means of general conceptions, the assistance of which is required by what is entirely individual, in order that it may be recalled in its order and connection. For the boundless multitude of things and events of the same and similar kinds, in the course of our life, does not admit directly of a perceptible and individual recollection of each particular, for which neither the powers of the most comprehensive memory nor our time would be sufficient. Therefore all this

can only be preserved by subsuming it under general conceptions, and the consequent reference to relatively few principles, by means of which we then have always at command an orderly and adequate survey of our past. We can only present to ourselves in perception particular scenes of the past, but the time that has passed since then and its content we are conscious of only in the abstract by means of conceptions of things and numbers which now represent days and years, together with their content. The memory of the brutes, on the contrary, like their whole intellect, is confined to what they perceive, and primarily consists merely in the fact that a recurring impression presents itself as having already been experienced, for the present perception revivifies the traces of an earlier one. Their memory is therefore always dependent upon what is now actually present. Just on this account, however, this excites anew the sensation and the mood which the earlier phenomenon produced. Thus the dog recognises acquaintances, distinguishes friends from enemies, easily finds again the path it has once travelled, the houses it has once visited, and at the sight of a plate or a stick is at once put into the mood associated with them. All kinds of training depend upon the use of this perceptive memory and

on the force of habit, which in the case of animals is specially strong. It is therefore just as different from human education as perception is from thinking. We ourselves are in certain cases, in which memory proper refuses us its service, confined to that merely perceptive recollection, and thus we can measure the difference between the two from our own experience. For example, at the sight of a person whom it appears to us we know, although we are not able to remember when or where we saw him; or again, when we visit a place where we once were in early childhood, that is, while our reason was yet undeveloped, and which we have therefore entirely forgotten, and yet feel that the present impression is one which we have already experienced. This is the nature of all the recollections of the brutes. We have only to add that in the case of the most sagacious this merely perceptive memory rises to a certain degree of phantasy, which again assists it, and by virtue of which, for example, the image of its absent master floats before the mind of the dog and excites a longing after him, so that when he remains away long it seeks for him everywhere. Its dreams also depend upon this phantasy. The consciousness of

the brutes is accordingly a mere succession of presents, none of which, however, exist as future before they appear, nor as past after they have vanished; which is the specific difference of human consciousness. Hence the brutes have infinitely less to suffer than we have, because they know no other pains but those which the present directly brings. But the present is without extension, while the future and the past, which contain most of the causes of our suffering, are widely extended, and to their actual content there is added that which is merely possible, which opens up an unlimited field for desire and aversion. The brutes, on the contrary, undisturbed by these, enjoy quietly and peacefully each present moment, even if it is only bearable. Human beings of very limited capacity perhaps approach them in this. Further, the sufferings which belong purely to the present can only be physical. Indeed the brutes do not properly speaking feel death: they can only know it when it appears, and then they are already no more. Thus then the life of the brute is a continuous present. It lives on without reflection, and exists wholly in the present; even the great majority of men live with very little reflection. Another consequence of the special nature of the intellect of the brutes, which

we have explained is the perfect accordance of their consciousness with their environment. Between the brute and the external world there is nothing, but between us and the external world there is always our thought about it, which makes us often inapproachable to it, and it to us. Only in the case of children and very primitive men is this wall of partition so thin that in order to see what goes on in them we only need to see what goes on round about them. Therefore the brutes are incapable alike of purpose and dissimulation; they reserve nothing. In this respect the dog stands to the man in the same relation as a glass goblet to a metal one, and this helps greatly to endear the dog so much to us, for it affords us great pleasure to see all those inclinations and emotions which we so often conceal displayed simply and openly in him. In general, the brutes always play, as it were, with their hand exposed; and therefore we contemplate with so much pleasure their behaviour towards each other, both when they belong to the same and to different species. It is characterised by a certain stamp of innocence, in contrast to the conduct of men, which is withdrawn from the innocence of nature by the entrance

of reason, and with it of prudence or deliberation. Hence human conduct has throughout the stamp of intention or deliberate purpose, the absence of which, and the consequent determination by the impulse of the moment, is the fundamental characteristic of all the action of the brutes. No brute is capable of a purpose properly so-called. To conceive and follow out a purpose is the prerogative of man, and it is a prerogative which is rich in consequences. Certainly an instinct like that of the bird of passage or the bee, still more a permanent, persistent desire, a longing like that of the dog for its absent master, may present the appearance of a purpose, with which, however, it must not be confounded. Now all this has its ultimate ground in the relation between the human and the brute intellect, which may also be thus expressed: The brutes have only direct knowledge, while we, in addition to this, have indirect knowledge; and the advantage which in many things—for example, in trigonometry and analysis, in machine work instead of hand work, &c.—indirect has over direct knowledge appears here also. Thus again we may say: The brutes have only a single intellect, we a double intellect, both perceptive and thinking, and the operation of the two often go on independently of each other.

We perceive one thing, and we think another. Often, again, they act upon each other. This way of putting the matter enables us specially to understand that natural openness and naivete of the brutes, referred to above, as contrasted with the concealment of man.

However, the law natura non facit saltus is not entirely suspended even with regard to the intellect of the brutes, though certainly the step from the brute to the human intelligence is the greatest which nature has made in the production of her creatures. In the most favoured individuals of the highest species of the brutes there certainly sometimes appears, always to our astonishment, a faint trace of reflection, reason, the comprehension of words, of thought, purpose, and deliberation. The most striking indications of this kind are afforded by the elephant, whose highly developed intelligence is heightened and supported by an experience of a lifetime which sometimes extends to two hundred years. He has often given unmistakable signs, recorded in well-known anecdotes, of premeditation, which, in the case of brutes, always astonishes us more than anything else. Such, for instance, is the story of the tailor on whom an elephant revenged himself for pricking him with a needle. I wish, however, to rescue from oblivion a parallel case to this, because it has the advantage of being authenticated by judicial investigation. On the 27th of August 1830 there was held at Morpeth, in England, a coroner’s inquest on the keeper, Baptist Bernhard, who was killed by his elephant. It appeared from the evidence that two years before he had offended the elephant grossly, and now, without any occasion, but on a favourable opportunity, the elephant had seized him and crushed him. (See the Spectator and other English papers of that day.) For special information on the intelligence of brutes I recommend Leroy’s excellent book, “Sur l’Intelligence des Animaux,” nouv. éd. 1802.

Chapter VI. On The Doctrine of Abstract or Rational Knowledge.

The outward impression upon the senses, together with the mood which it alone awakens in us, vanishes with the presence of the thing. Therefore these two cannot of themselves constitute experience proper, whose teaching is to guide our conduct for the future. The image of that impression which the imagination preserves is originally weaker than the impression itself, and becomes weaker and weaker daily, until in time it disappears altogether. There is only one thing which is not subject either to the instantaneous vanishing of the impression or to the gradual disappearance of its image, and is therefore free from the power of time. This is the conception. In it, then, the teaching of experience must be stored up, and it alone is suited to be a safe guide to our steps in life. Therefore Seneca says rightly, “Si vis tibi omnia subjicere, te subjice rationi” (Ep. 37). And I add to this that the essential condition of surpassing others in actual life is that we should reflect or deliberate. Such an important tool of the intellect as the concept evidently cannot be identical with the word, this mere sound, which as an impression of sense passes with the moment, or as a phantasm of hearing dies away with time. Yet the concept is an idea, the distinct consciousness and

preservation of which are bound up with the word. Hence the Greeks called word, concept, relation, thought, and reason by the name of the first, ὁ λογος. Yet the concept is perfectly different both from the word, to which it is joined, and from the perceptions, from which it has originated. It is of an entirely different nature from these impressions of the senses. Yet it is able to take up into itself all the results of perception, and give them back again unchanged and undiminished after the longest period of time; thus alone does experience arise. But the concept preserves, not what is perceived nor what is then felt, but only what is essential in these, in an entirely altered form, and yet as an adequate representative of them. Just as flowers cannot be preserved, but their ethereal oil, their essence, with the same smell and the same virtues, can be. The action that has been guided by correct conceptions will, in the result, coincide with the real object aimed at. We may judge of the inestimable value of conceptions, and consequently of the reason, if we glance for a moment at the infinite multitude and variety of the things and conditions that coexist and succeed each other, and then consider that speech and writing (the signs of conceptions)

are capable of affording us accurate information as to everything and every relation when and wherever it may have been; for comparatively few conceptions can contain and represent an infinite number of things and conditions. In our own reflection abstraction is a throwing off of useless baggage for the sake of more easily handling the knowledge which is to be compared, and has therefore to be turned about in all directions. We allow much that is unessential, and therefore only confusing, to fall away from the real things, and work with few but essential determinations thought in the abstract. But just because general conceptions are only formed by thinking away and leaving out existing qualities, and are therefore the emptier the more general they are, the use of this procedure is confined to the working up of knowledge which we have already acquired. This working up includes the drawing of conclusions from premisses contained in our knowledge. New insight, on the contrary, can only be obtained by the help of the faculty of judgment, from perception, which alone is complete and rich knowledge. Further, because the content and the extent of the concepts stand in inverse relation to each other, and thus the more is thought under a concept, the less is thought in it, concepts form a graduated series,

a hierarchy, from the most special to the most general, at the lower end of which scholastic realism is almost right, and at the upper end nominalism. For the most special conception is almost the individual, thus almost real; and the most general conception, e.g., being (i.e., the infinitive of the copula), is scarcely anything but a word. Therefore philosophical systems which confine themselves to such very general conceptions, without going down to the real, are little more than mere juggling with words. For since all abstraction consists in thinking away, the further we push it the less we have left over. Therefore, if I read those modern philosophemes which move constantly in the widest abstractions, I am soon quite unable, in spite of all attention, to think almost anything more in connection with them; for I receive no material for thought, but am supposed to work with mere empty shells, which gives me a feeling like that which we experience when we try to throw very light bodies; the strength and also the exertion are there, but there is no object to receive them, so as to supply the other moment of motion. If any one wants to experience this let him read the writings of the disciples of Schelling, or still better of the Hegelians. Simple conceptions would

necessarily be such as could not be broken up. Accordingly they could never be the subject of an analytical judgment. This I hold to be impossible, for if we think a conception we must also be able to give its content. What are commonly adduced as examples of simple conceptions are really not conceptions at all, but partly mere sensations—as, for instance, those of some special colour; partly the forms of perception which are known to us a priori, thus properly the ultimate elements of perceptive knowledge. But this itself is for the whole system of our thought what granite is for geology, the ultimate firm basis which supports all, and beyond which we cannot go. The distinctness of a conception demands not only that we should be able to separate its predicates, but also that we should be able to analyse these even if they are abstractions, and so on until we reach knowledge of perception, and thus refer to concrete things through the distinct perception of which the final abstractions are verified and reality guaranteed to them, as well as to all the higher abstractions which rest upon them. Therefore the ordinary explanation that the conception is distinct as soon as we can give its predicates is not sufficient. For the separating of these predicates may lead perhaps

to more conceptions; and so on again without there being that ultimate basis of perceptions which imparts reality to all those conceptions. Take, for example, the conception “spirit,” and analyse it into its predicates: “A thinking, willing, immaterial, simple, indestructible being that does not occupy space.” Nothing is yet distinctly thought about it, because the elements of these conceptions cannot be verified by means of perceptions, for a thinking being without a brain is like a digesting being without a stomach. Only perceptions are, properly speaking, clear, not conceptions; these at the most can only be distinct. Hence also, absurd as it was, “clear and confused” were coupled together and used as synonymous when knowledge of perception was explained as merely a confused abstract knowledge, because the latter kind of knowledge alone was distinct. This was first done by Duns Scotus, but Leibnitz has substantially the same view, upon which his “Identitas Indiscernibilium” depends. (See Kant’s refutation of this, p. 275 of the first edition of the Critique of Pure Reason.)

The close connection of the conception with the word, thus of speech with reason, which was touched on above, rests ultimately upon the following ground. Time is throughout the form of our whole consciousness, with its inward and outward apprehension. Conceptions, on the other hand, which originate through abstraction and are perfectly general ideas, different from all particular things, have in this property indeed a certain measure of objective existence, which does not, however, belong to any series of events in time. Therefore in order to enter the immediate present of an individual consciousness, and thus to admit of being introduced into a series of events in time, they must to a certain extent be reduced again to the nature of individual things, individualised, and therefore linked to an idea of sense. Such an idea is the word. It is accordingly the sensible sign of the conception, and as such the necessary means of fixing it, that is, of presenting it to the consciousness, which is bound up with the form of time, and thus establishing a connection between the reason, whose objects are merely general universals, knowing neither place nor time, and consciousness, which is bound up with time, is sensuous, and so far purely animal. Only by this means is the reproduction at pleasure, thus the recollection and preservation, of conceptions possible and open to us; and only by means of this, again, are the operations which are undertaken with conceptions possible—judgment, inference, comparison, limitation, &c. It is true it sometimes happens that conceptions occupy consciousness without their signs, as when we run through a train of reasoning so rapidly that we could not think the words in the time. But such cases are exceptions, which presuppose great exercise of the reason, which it could only have obtained by means of language. How much the use of reason is bound up with speech we see in the case of the deaf and dumb, who, if they have learnt no kind of language, show scarcely more intelligence than the ourang-outang or the elephant. For their reason is almost entirely potential, not actual.

Words and speech are thus the indispensable means of distinct thought. But as every means, every machine, at once burdens and hinders, so also does language; for it forces the fluid and modifiable thoughts, with their infinitely fine distinctions of difference, into certain rigid, permanent forms, and thus in fixing also fetters them. This hindrance is to some extent got rid of by learning several languages. For in these the thought is poured from one mould into another, and somewhat alters its form in each, so that it becomes more and more freed from all form and clothing, and thus its own proper nature comes more distinctly into consciousness, and it recovers again its original capacity for modification. The ancient languages render this service very much better than the modern, because, on account of their great difference from the latter, the same thoughts are expressed in them in quite another way, and must thus assume a very different form; besides which the more perfect grammar of the ancient languages renders a more artistic and more perfect construction of the thoughts and their connection possible. Thus a Greek or a Roman might perhaps content himself with his own language, but he who understands nothing but some single modern patois will soon betray this poverty in writing and speaking; for his thoughts, firmly bound to such narrow stereotyped forms, must appear awkward and monotonous. Genius certainly makes up for this as for everything else, for example in Shakespeare.

Burke, in his “Inquiry into the Sublime and Beautiful,” p. 5, § 4 and 5, has given a perfectly correct and very elaborate exposition of what I laid down in § 9 of the first volume, that the words of a speech are perfectly understood without calling up ideas of perception, pictures in our heads. But he draws from this the entirely false conclusion that we hear, apprehend, and make use of words without connecting with them any idea whatever; whereas he ought to have drawn the conclusion that all ideas are not perceptible images, but that precisely those ideas which must be expressed by means of words are abstract notions or conceptions, and these from their very nature are not perceptible. Just because words impart only general conceptions, which are perfectly different from ideas of perception, when, for example, an event is recounted all the hearers will receive the same conceptions; but if afterwards they wish to make the incident clear to themselves, each of them will call up in his imagination a different image of it, which differs considerably from the correct image that is possessed only by the eye-witness. This is the primary reason (which, however, is accompanied by others) why every fact is necessarily distorted by being repeatedly told. The second recounter communicates conceptions which he has abstracted from the image of his own imagination, and from these conceptions the third now forms another image differing still more widely from the truth, and this again he translates into conceptions, and so the process goes on. Whoever is sufficiently matter of fact to stick to the conceptions imparted to him, and repeat them, will prove the most truthful reporter.

The best and most intelligent exposition of the essence and nature of conceptions which I have been able to find is in Thomas Reid’s “Essays on the Powers of Human Mind,” vol. ii., Essay 5, ch. 6. This was afterwards condemned by Dugald Stewart in his “Philosophy of the Human Mind.” Not to waste paper I will only briefly remark with regard to the latter that he belongs to that large class who have obtained an undeserved reputation through favour and friends, and therefore I can only advise that not an hour should be wasted over the scribbling of this shallow writer.

The princely scholastic Pico de Mirandula already saw that reason is the faculty of abstract ideas, and understanding the faculty of ideas of perception. For in his book, “De Imaginatione,” ch. 11, he carefully distinguishes understanding and reason, and explains the latter as the discursive faculty peculiar to man, and the former as the intuitive faculty, allied to the kind of knowledge which is proper to the angels, and indeed to God. Spinoza also characterises reason quite correctly as the faculty of framing general conceptions (Eth., ii. prop. 40, schol. 2). Such facts would not need to be mentioned if it were not for the tricks that have been played in the last fifty years by the whole of the philosophasters of Germany with the conception reason. For they have tried, with shameless audacity, to smuggle in under this name an entirely spurious faculty of immediate, metaphysical, so-called super-sensuous knowledge. The reason proper, on the other hand, they call understanding, and the understanding proper, as something quite strange to them, they overlook altogether, and ascribe its intuitive functions to sensibility.

In the case of all things in this world new drawbacks or disadvantages cleave to every source of aid, to every gain, to every advantage; and thus reason also, which gives to man such great advantages over the brutes, carries with it its special disadvantages, and opens for him paths of error into which the brutes can never stray. Through it a new species of motives, to which the brute is not accessible, obtains power over his will. These are the abstract motives, the mere thoughts, which are by no means always drawn from his own experience, but often come to him only through the talk and example of others, through tradition and literature. Having become accessible to thought, he is at once exposed to error. But every error must sooner or later do harm, and the greater the error the greater the harm it will do. The individual error must be atoned for by him who cherishes it, and often he has to pay dearly for it. And the same thing holds good on a large scale of the common errors of whole nations. Therefore it cannot too often be repeated that every error wherever we meet it, is to be pursued and rooted out as an enemy of mankind, and that there can be no such thing as

privileged or sanctioned error. The thinker ought to attack it, even if humanity should cry out with pain, like a sick man whose ulcer the physician touches. The brute can never stray far from the path of nature; for its motives lie only in the world of perception, where only the possible, indeed only the actual, finds room. On the other hand, all that is only imaginable, and therefore also the false, the impossible, the absurd, and senseless, enters into abstract conceptions, into thoughts and words. Since now all partake of reason, but few of judgment, the consequence is that man is exposed to delusion, for he is abandoned to every conceivable chimera which any one talks him into, and which, acting on his will as a motive, may influence him to perversities and follies of every kind, to the most unheard-of extravagances, and also to actions most contrary to his animal nature. True culture, in which knowledge and judgment go hand in hand, can only be brought to bear on a few; and still fewer are capable of receiving it. For the great mass of men a kind of training everywhere takes its place. It is effected by example, custom, and the very early and firm impression of certain conceptions, before any experience, understanding, or judgment were there to

disturb the work. Thus thoughts are implanted, which afterward cling as firmly, and are as incapable of being shaken by any instruction as if they were inborn; and indeed they have often been regarded, even by philosophers, as such. In this way we can, with the same trouble, imbue men with what is right and rational, or with what is most absurd. For example, we can accustom them to approach this or that idol with holy dread, and at the mention of its name to prostrate in the dust not only their bodies but their whole spirit; to sacrifice their property and their lives willingly to words, to names, to the defence of the strangest whims; to attach arbitrarily the greatest honour or the deepest disgrace to this or that, and to prize highly or disdain everything accordingly with full inward conviction; to renounce all animal food, as in Hindustan, or to devour still warm and quivering pieces, cut from the living animal, as in Abyssinia; to eat men, as in New Zealand, or to sacrifice their children to Moloch; to castrate themselves, to fling themselves voluntarily on the funeral piles of the dead—in a word, to do anything we please. Hence the Crusades, the extravagances of fanatical sects; hence Chiliasts and Flagellants, persecutions, autos da fe, and all that

is offered by the long register of human perversities. Lest it should be thought that only the dark ages afford such examples, I shall add a couple of more modern instances. In the year 1818 there went from Würtemberg 7000 Chiliasts to the neighbourhood of Ararat, because the new kingdom of God, specially announced by Jung Stilling, was to appear there.(17) Gall relates that in his time a mother killed her child and roasted it in order to cure her husband’s rheumatism with its fat.(18) The tragical side of error lies in the practical, the comical is reserved for the theoretical. For example, if we could firmly persuade three men that the sun is not the cause of daylight, we might hope to see it soon established as the general conviction. In Germany it was possible to proclaim as the greatest philosopher of all ages Hegel, a repulsive, mindless charlatan, an unparalleled scribbler of nonsense, and for twenty years many thousands have believed it stubbornly and firmly; and indeed, outside Germany, the Danish Academy entered the lists against myself for his fame, and sought to have him regarded as a summus philosophus. (Upon this see the preface to my Grundproblemen der Ethik.) These, then, are the disadvantages which, on account of the rarity of judgment, attach to the existence of

reason. We must add to them the possibility of madness. The brutes do not go mad, although the carnivora are subject to fury, and the ruminants to a sort of delirium.

Chapter VII.(19) On The Relation of the Concrete Knowledge of Perception to Abstract Knowledge.

It has been shown that conceptions derive their material from knowledge of perception, and therefore the entire structure of our world of thought rests upon the world of perception. We must therefore be able to go back from every conception, even if only indirectly through intermediate conceptions, to the perceptions from which it is either itself directly derived or those conceptions are derived of which it is again an abstraction. That is to say, we must be able to support it with perceptions which stand to the abstractions in the relation of examples. These perceptions thus afford the real content of all our thought, and whenever they are wanting we have not had conceptions but mere words in our heads. In this respect our intellect is like a bank, which, if it is to be sound, must have cash in its safe, so as to be able to meet all the notes it has issued, in case of demand; the perceptions are the cash, the conceptions are the notes. In this sense the perceptions might very appropriately be called primary, and the conceptions, on the other hand, secondary ideas. Not quite so aptly, the Schoolmen, following the example of Aristotle (Metaph., vi. 11, xi. 1), called real things substantiæ primæ, and the conceptions substantiæ secundæ. Books impart only secondary ideas.

Mere conceptions of a thing without perception give only a general knowledge of it. We only have a thorough understanding of things and their relations so far as we are able to represent them to ourselves in pure, distinct perceptions, without the aid of words. To explain words by words, to compare concepts with concepts, in which most philosophising consists, is a trivial shifting about of the concept-spheres in order to see which goes into the other and which does not. At the best we can in this way only arrive at conclusions; but even conclusions give no really new knowledge, but only show us all that lay in the knowledge we already possessed, and what part of it perhaps might be applicable to the particular case. On the other hand, to perceive, to allow the things themselves to speak to us, to apprehend new relations of them, and then to take up and deposit all this in conceptions, in order to possess it with certainty—that gives new knowledge. But, while almost every one is capable of comparing conceptions with conceptions, to compare conceptions with perceptions is a gift of the select few. It is the condition, according to the degree of its perfection, of wit, judgment, ingenuity, genius. The former faculty, on the contrary, results in little more than

possibly rational reflections. The inmost kernel of all genuine and actual knowledge is a perception; and every new truth is the profit or gain yielded by a perception. All original thinking takes place in images, and this is why imagination is so necessary an instrument of thought, and minds that lack imagination will never accomplish much, unless it be in mathematics. On the other hand, merely abstract thoughts, which have no kernel of perception, are like cloud-structures, without reality. Even writing and speaking, whether didactic or poetical, has for its final aim to guide the reader to the same concrete knowledge from which the author started; if it has not this aim it is bad. This is why the contemplation and observing of every real thing, as soon as it presents something new to the observer, is more instructive than any reading or hearing. For indeed, if we go to the bottom of the matter, all truth and wisdom, nay, the ultimate secret of things, is contained in each real object, yet certainly only in concreto, just as gold lies hidden in the ore; the difficulty is to extract it. From a book, on the contrary, at the best we only receive the truth at second hand, and oftener not at all.

In most books, putting out of account those that are thoroughly bad, the author, when their content is not altogether empirical, has certainly thought but not perceived; he has written from reflection, not from intuition, and it is this that makes them commonplace and tedious. For what the author has thought could always have been thought by the reader also, if he had taken the same trouble; indeed it consists simply of intelligent thought, full exposition of what is implicite contained in the theme. But no actually new knowledge comes in this way into the world; this is only created in the moment of perception, of direct comprehension of a new side of the thing. When, therefore, on the contrary, sight has formed the foundation of an author’s thought, it is as if he wrote from a land where the reader has never been, for all is fresh and new, because it is drawn directly from the original source of all knowledge. Let me illustrate the distinction here touched upon by a perfectly easy and simple example. Any commonplace writer might easily describe profound contemplation or petrifying astonishment by saying: “He stood like a statue;” but Cervantes says: “Like a clothed statue, for the wind moved his garments” (Don Quixote, book vi. ch. 19). It is thus that all great

minds have ever thought in presence of the perception, and kept their gaze steadfastly upon it in their thought. We recognise this from this fact, among others, that even the most opposite of them so often agree and coincide in some particular; because they all speak of the same thing which they all had before their eyes, the world, the perceived reality; indeed in a certain degree they all say the same thing, and others never believe them. We recognise it further in the appropriateness and originality of the expression, which is always perfectly adapted to the subject because it has been inspired by perception, in the naivete of the language, the freshness of the imagery, and the impressiveness of the similes, all of which qualities, without exception, distinguish the works of great minds, and, on the contrary, are always wanting in the works of others. Accordingly only commonplace forms of expression and trite figures are at the service of the latter, and they never dare to allow themselves to be natural, under penalty of displaying their vulgarity in all its dreary barrenness; instead of this they are affected mannerists. Hence Buffon says: “Le style est l’homme même.” If men of commonplace mind write poetry they have certain traditional conventional opinions, passions, noble sentiments, &c., which they have received in

the abstract, and attribute to the heroes of their poems, who are in this way reduced to mere personifications of those opinions, and are thus themselves to a certain extent abstractions, and therefore insipid and tiresome. If they philosophise, they have taken in a few wide abstract conceptions, which they turn about in all directions, as if they had to do with algebraical equations, and hope that something will come of it; at the most we see that they have all read the same things. Such a tossing to and fro of abstract conceptions, after the manner of algebraical equations, which is now-a-days called dialectic, does not, like real algebra, afford certain results; for here the conception which is represented by the word is not a fixed and perfectly definite quality, such as are symbolised by the letters in algebra, but is wavering and ambiguous, and capable of extension and contraction. Strictly speaking, all thinking, i.e., combining of abstract conceptions, has at the most the recollections of earlier perceptions for its material, and this only indirectly, so far as it constitutes the foundation of all conceptions. Real knowledge, on the contrary, that is, immediate knowledge, is perception alone, new, fresh perception itself. Now the concepts which the reason has framed and the memory has preserved cannot all be present to

consciousness at once, but only a very small number of them at a time. On the other hand, the energy with which we apprehend what is present in perception, in which really all that is essential in all things generally is virtually contained and represented, is apprehended, fills the consciousness in one moment with its whole power. Upon this depends the infinite superiority of genius to learning; they stand to each other as the text of an ancient classic to its commentary. All truth and all wisdom really lies ultimately in perception. But this unfortunately can neither be retained nor communicated. The objective conditions of such communication can certainly be presented to others purified and illustrated through plastic and pictorial art, and even much more directly through poetry; but it depends so much upon subjective conditions, which are not at the command of every one, and of no one at all times, nay, indeed in the higher degrees of perfection, are only the gift of the favoured few. Only the worst knowledge, abstract, secondary knowledge, the conception, the mere shadow of true knowledge, is unconditionally communicable. If perceptions were communicable, that would be a communication worth the trouble; but at last every one must remain in his own skin and skull, and no one can help another. To enrich the

conception from perception is the unceasing endeavour of poetry and philosophy. However, the aims of man are essentially practical; and for these it is sufficient that what he has apprehended through perception should leave traces in him, by virtue of which he will recognise it in the next similar case; thus he becomes possessed of worldly wisdom. Thus, as a rule, the man of the world cannot teach his accumulated truth and wisdom, but only make use of it; he rightly comprehends each event as it happens, and determines what is in conformity with it. That books will not take the place of experience nor learning of genius are two kindred phenomena. Their common ground is that the abstract can never take the place of the concrete. Books therefore do not take the place of experience, because conceptions always remain general, and consequently do not get down to the particular, which, however, is just what has to be dealt with in life; and, besides this, all conceptions are abstracted from what is particular and perceived in experience, and therefore one must have come to know these in order adequately to understand even the general conceptions which the books communicate. Learning cannot take the place of genius, because it also affords merely conceptions, but the knowledge of genius consists in the

apprehension of the (Platonic) Ideas of things, and therefore is essentially intuitive. Thus in the first of these phenomena the objective condition of perceptive or intuitive knowledge is wanting; in the second the subjective; the former may be attained, the latter cannot.

Wisdom and genius, these two summits of the Parnassus of human knowledge, have their foundation not in the abstract and discursive, but in the perceptive faculty. Wisdom proper is something intuitive, not something abstract. It does not consist in principles and thoughts, which one can carry about ready in his mind, as results of his own research or that of others; but it is the whole manner in which the world presents itself in his mind. This varies so much that on account of it the wise man lives in another world from the fool, and the genius sees another world from the blockhead. That the works of the man of genius immeasurably surpass those of all others arises simply from the fact that the world which he sees, and from which he takes his utterances, is so much clearer, as it were more profoundly worked out, than that in the minds of others, which certainly contains the same objects, but is to the world of the man of genius as the Chinese picture without shading and perspective is to the finished oil-painting. The material is in all minds the same; but the difference lies in the perfection of the form which it assumes in each, upon which the numerous grades of intelligence ultimately depend. These grades thus exist in the root, in the perceptive or intuitive apprehension, and do not first appear in the abstract. Hence original mental superiority shows itself so easily when the occasion arises, and is at once felt and hated by others.

In practical life the intuitive knowledge of the understanding is able to guide our action and behaviour directly, while the abstract knowledge of the reason can only do so by means of the memory. Hence arises the superiority of intuitive knowledge in all cases which admit of no time for reflection; thus for daily intercourse, in which, just on this account, women excel. Only those who intuitively know the nature of men as they are as a rule, and thus comprehend the individuality of the person before them, will understand how to manage him with certainty and rightly. Another may know by heart all the three hundred maxims of Gracian, but this will not save him from stupid mistakes and misconceptions if he lacks that intuitive knowledge. For all abstract knowledge affords us primarily mere general principles and rules; but the particular case is almost never to be carried out exactly according to the rule; then the rule itself has to be presented to us at the right time by the memory, which seldom punctually happens; then the propositio minor has to be formed out of the present case, and finally the conclusion drawn. Before all this is done the opportunity has generally turned its back upon us, and then those excellent principles and rules serve at the most to

enable us to measure the magnitude of the error we have committed. Certainly with time we gain in this way experience and practice, which slowly grows to knowledge of the world, and thus, in connection with this, the abstract rules may certainly become fruitful. On the other hand, the intuitive knowledge, which always apprehends only the particular, stands in immediate relation to the present case. Rule, case, and application are for it one, and action follows immediately upon it. This explains why in real life the scholar, whose pre-eminence lies in the province of abstract knowledge, is so far surpassed by the man of the world, whose pre-eminence consists in perfect intuitive knowledge, which original disposition conferred on him, and a rich experience has developed. The two kinds of knowledge always stand to each other in the relation of paper money and hard cash; and as there are many cases and circumstances in which the former is to be preferred to the latter, so there are also things and situations for which abstract knowledge is more useful than intuitive. If, for example, it is a conception that in some case guides our action, when it is once grasped it has the advantage of being unalterable, and therefore under its guidance we go to work with perfect certainty and consistency. But

this certainty which the conception confers on the subjective side is outweighed by the uncertainty which accompanies it on the objective side. The whole conception may be false and groundless, or the object to be dealt with may not come under it, for it may be either not at all or not altogether of the kind which belongs to it. Now if in the particular case we suddenly become conscious of something of this sort, we are put out altogether; if we do not become conscious of it, the result brings it to light. Therefore Vauvenargue says: “Personne n’est sujet à plus de fautes, que ceux qui n’agissent que par réflexion.” If, on the contrary, it is direct perception of the objects to be dealt with and their relations that guides our action, we easily hesitate at every step, for the perception is always modifiable, is ambiguous, has inexhaustible details in itself, and shows many sides in succession; we act therefore without full confidence. But the subjective uncertainty is compensated by the objective certainty, for here there is no conception between the object and us, we never lose sight of it; if therefore we only see correctly what we have before us and what we do, we shall hit the mark. Our action then is perfectly sure only when it

is guided by a conception the right ground of which, its completeness, and applicability to the given cause is perfectly certain. Action in accordance with conceptions may pass into pedantry, action in accordance with the perceived impression into levity and folly.

Perception is not only the source of all knowledge, but is itself knowledge κατ᾽ εξοχην, is the only unconditionally true, genuine knowledge completely worthy of the name. For it alone imparts insight properly so called, it alone is actually assimilated by man, passes into his nature, and can with full reason be called his; while the conceptions merely cling to him. In the fourth book we see indeed that true virtue proceeds from knowledge of perception or intuitive knowledge; for only those actions which are directly called forth by this, and therefore are performed purely from the impulse of our own nature, are properly symptoms of our true and unalterable character; not so those which, resulting from reflection and its dogmas, are often extorted from the character, and therefore have no unalterable ground in us. But wisdom also, the true view of life, the correct eye, and the searching judgment, proceeds from the way in which the man apprehends the perceptible world, but not from his mere abstract knowledge, i.e., not from abstract conceptions. The basis or ultimate content of every science consists, not in proofs, nor in what is proved, but in the unproved foundation of the proofs, which can finally be apprehended only through perception. So also the basis of the true wisdom and real insight of each

man does not consist in conceptions and in abstract rational knowledge, but in what is perceived, and in the degree of acuteness, accuracy, and profundity with which he has apprehended it. He who excels here knows the (Platonic) Ideas of the world and life; every case he has seen represents for him innumerable cases; he always apprehends each being according to its true nature, and his action, like his judgment, corresponds to his insight. By degrees also his countenance assumes the expression of penetration, of true intelligence, and, if it goes far enough, of wisdom. For it is pre-eminence in knowledge of perception alone that stamps its impression upon the features also; while pre-eminence in abstract knowledge cannot do this. In accordance with what has been said, we find in all classes men of intellectual superiority, and often quite without learning. Natural understanding can take the place of almost every degree of culture, but no culture can take the place of natural understanding. The scholar has the advantage of such men in the possession of a wealth of cases and facts (historical knowledge) and of causal determinations (natural science), all in well-ordered connection, easily surveyed; but yet with all this he has not a more accurate and profound insight into what is truly essential in all these cases, facts, and

causations. The unlearned man of acuteness and penetration knows how to dispense with this wealth; we can make use of much; we can do with little. One case in his own experience teaches him more than many a scholar is taught by a thousand cases which he knows, but does not, properly speaking, understand. For the little knowledge of that unlearned man is living, because every fact that is known to him is supported by accurate and well-apprehended perception, and thus represents for him a thousand similar facts. On the contrary, the much knowledge of the ordinary scholar is dead, because even if it does not consist, as is often the case, in mere words, it consists entirely in abstract knowledge. This, however, receives its value only through the perceptive knowledge of the individual with which it must connect itself, and which must ultimately realise all the conceptions. If now this perceptive knowledge is very scanty, such a mind is like a bank with liabilities tenfold in excess of its cash reserve, whereby in the end it becomes bankrupt. Therefore, while the right apprehension of the perceptible world has impressed the stamp of insight and wisdom on the brow of many an unlearned man, the face of many a scholar bears no other trace of his much study than that

of exhaustion and weariness from excessive and forced straining of the memory in the unnatural accumulation of dead conceptions. Moreover, the insight of such a man is often so puerile, so weak and silly, that we must suppose that the excessive strain upon the faculty of indirect knowledge, which is concerned with abstractions, directly weakens the power of immediate perceptive knowledge, and the natural and clear vision is more and more blinded by the light of books. At any rate the constant streaming in of the thoughts of others must confine and suppress our own, and indeed in the long run paralyse the power of thought if it has not that high degree of elasticity which is able to withstand that unnatural stream. Therefore ceaseless reading and study directly injures the mind—the more so that completeness and constant connection of the system of our own thought and knowledge must pay the penalty if we so often arbitrarily interrupt it in order to gain room for a line of thought entirely strange to us. To banish my own thought in order to make room for that of a book would seem to me like what Shakespeare censures in the tourists of his time, that they sold their own land to see that of others. Yet the inclination for reading of most

scholars is a kind of fuga vacui, from the poverty of their own minds, which forcibly draws in the thoughts of others. In order to have thoughts they must read something; just as lifeless bodies are only moved from without; while the man who thinks for himself is like a living body that moves of itself. Indeed it is dangerous to read about a subject before we have thought about it ourselves. For along with the new material the old point of view and treatment of it creeps into the mind, all the more so as laziness and apathy counsel us to accept what has already been thought, and allow it to pass for truth. This now insinuates itself, and henceforward our thought on the subject always takes the accustomed path, like brooks that are guided by ditches; to find a thought of our own, a new thought, is then doubly difficult. This contributes much to the want of originality on the part of scholars. Add to this that they suppose that, like other people, they must divide their time between pleasure and work. Now they regard reading as their work and special calling, and therefore they gorge themselves with it, beyond what they can digest. Then reading no longer plays the part of the mere initiator of thought, but

takes its place altogether; for they think of the subject just as long as they are reading about it, thus with the mind of another, not with their own. But when the book is laid aside entirely different things make much more lively claims upon their interest; their private affairs, and then the theatre, card-playing, skittles, the news of the day, and gossip. The man of thought is so because such things have no interest for him. He is interested only in his problems, with which therefore he is always occupied, by himself and without a book. To give ourselves this interest, if we have not got it, is impossible. This is the crucial point. And upon this also depends the fact that the former always speak only of what they have read, while the latter, on the contrary, speaks of what he has thought, and that they are, as Pope says:

“For ever reading, never to be read.”

The mind is naturally free, not a slave; only what it does willingly, of its own accord, succeeds. On the other hand, the compulsory exertion of a mind in studies for which it is not qualified, or when it has become tired, or in general too continuously and invita Minerva, dulls the brain, just as reading by moonlight dulls the eyes. This is especially the case with the straining of the immature brain in the earlier years of childhood. I believe that the learning of Latin and Greek grammar from the sixth to the twelfth year lays the foundation of the subsequent stupidity of most scholars. At any rate the mind requires the nourishment of materials from without. All that we eat is not at once incorporated in the organism, but only so much of it as is digested; so that only a small part of it is assimilated, and the remainder passes away; and thus to eat more than we can assimilate is useless and injurious. It is precisely the same with what we read. Only so far as it gives food for thought does it increase our insight and true knowledge. Therefore Heracleitus says: “πολυμαθια νουν ου διδασκει” (multiscitia non dat intellectum). It seems, however, to me that learning may be compared to a heavy suit of armour, which certainly makes the strong man quite invincible, but to the weak man is a burden under which he sinks altogether.

The exposition given in our third book of the knowledge of the (Platonic) Ideas, as the highest attainable by man, and at the same time entirely perceptive or intuitive knowledge, is a proof that the source of true wisdom does not lie in abstract rational knowledge, but in the clear and profound apprehension of the world in perception. Therefore wise men may live in any age, and those of the past remain wise men for all succeeding generations. Learning, on the contrary, is relative; the learned men of the past are for the most part children as compared with us, and require indulgence. But to him who studies in order to gain insight books and studies are only steps of the ladder by which he climbs to the summit of knowledge. As soon as a round of the ladder has raised him a step, he leaves it behind him. The many, on the other hand, who study in order to fill their memory do not use the rounds of the ladder to mount by, but take them off, and load themselves with them to carry them away, rejoicing at the increasing weight of the burden. They remain always below, because they bear what ought to have borne them.

Upon the truth set forth here, that the kernel of all knowledge is the perceptive or intuitive apprehension, depends the true and profound remark of Helvetius, that the really characteristic and original views of which a gifted individual is capable, and the working up, development, and manifold application of which is the material of all his works, even if written much later, can arise in him only up to the thirty-fifth or at the latest the fortieth year of his life, and are really the result of combinations he has made in his early youth. For they are not mere connections of abstract conceptions, but his own intuitive comprehension of the objective world and the nature of things. Now, that this intuitive apprehension must have completed its work by the age mentioned above depends partly on the fact that by that time the ectypes of all (Platonic) Ideas must have presented themselves to the man, and therefore cannot appear later with the strength of the first impression; partly on this, that the highest energy of brain activity is demanded for this quintessence of all knowledge, for this proof before the letter of the apprehension, and this highest energy of the brain is dependent on the freshness and flexibility of its fibres and the rapidity with which the arterial blood flows to the brain. But this again is at its strongest only as long as the arterial system has a decided predominance over the venous system, which begins to decline after the thirtieth year, until at last, after the forty-second year, the venous system obtains the upper hand, as Cabanis has admirably and instructively explained. Therefore the years between twenty and thirty and the first few years after thirty are for the intellect what May is for the trees; only then do the blossoms appear of which all the later fruits are the development. The world of perception has made its impression, and thereby laid the foundation of all the subsequent thoughts of the individual. He may by reflection make clearer what he has apprehended; he may yet acquire much knowledge as nourishment for the fruit which has once set; he may extend his views, correct his conceptions and judgments, it may be only through endless combinations that he becomes completely master of the materials he has gained; indeed he will generally produce his best works much later, as the greatest heat begins with the decline of the day, but he can no longer hope for new original knowledge from the one living fountain of perception. It is this that Byron feels when he breaks forth into his wonderfully beautiful lament:

“No more—no more—oh! never more on me The freshness of the heart can fall like dew, Which out of all the lovely things we see Extracts emotions beautiful and new, Hived in our bosoms like the bag o’ the bee: Think’st thou the honey with those objects grew? Alas! ’twas not in them, but in thy power To double even the sweetness of a flower.”