CHAPTER XXII: Objective View of the Intellect [1]There are two fundamentally different ways of considering the intellect, which depend on the difference of point of view; and much as they are in consequence opposed to each other, they must yet be brought into agreement. One is the subjective way, which, starting from within, and taking consciousness as what is given, shows us by what mechanism the world exhibits itself in this consciousness, and how from materials furnished by the senses and the understanding the world is built up in it. We must regard Locke as the originator of this method of consideration; Kant brought it to an incomparably higher perfection, and our first book, together with its supplements, is devoted to this method.
The opposite to this way of considering the intellect is the objective method. Starting from outside, it takes as its object not our own consciousness, but the beings that are given in external experience, and are conscious of themselves and the world. It then investigates what relation their intellect has to their other qualities, how this intellect has become possible, how it has become necessary, and what it achieves for them. The standpoint of this method of consideration is the empirical; it takes the world and the animal beings in it as absolutely given, since it starts from them. Accordingly, it is primarily zoological, anatomical, physiological, and becomes philosophical only through connexion with that first method of consideration, and from the higher point of view obtained thereby. We are indebted to zootomists and physiologists, mostly French, for the only foundation to it hitherto given. In particular, Cabanis is to be mentioned here; his excellent work, Des rapports du physique au moral, is a pioneer work on the path of physiology for this method of consideration. The celebrated Bichat was a contemporary of his, but his theme was much more comprehensive. Even Gall may be mentioned here, although his principal aim was missed. Ignorance and prejudice have brought the accusation of materialism against this method of consideration, because, adhering simply to experience, it does not know the immaterial substance, namely soul. The most recent advances in the physiology of the nervous system by Sir Charles Bell, Magendie, Marshall Hall, and others have also enriched and corrected the subject-matter of this method of consideration. A philosophy like the Kantian, that entirely ignores this point of view for the intellect, is one-sided, and therefore inadequate. It leaves an immense gulf between our philosophical and physiological knowledge, with which we can never be satisfied.
Although what I have said in the two preceding chapters on the life and activity of the brain belongs to this method of consideration, and in the same way all the explanations given under the heading "Physiology of Plants" in the essay On the Will in Nature, and also a part of those to be found under the heading "Comparative Anatomy" are devoted to it, the following statement of its results in general will certainly not be superfluous.
We shall become most vividly aware of the glaring contrast between the two methods of considering the intellect which in the above remarks are clearly opposed, if we carry the matter to the extreme, and realize that what the one as reflective thought and vivid perception immediately takes up and makes its material, is for the other nothing more than the physiological function of an internal organ, the brain. In fact, we are justified in asserting that the whole of the objective world, so boundless in space, so infinite in time, so unfathomable in its perfection, is really only a certain movement or affection of the pulpy mass in the skull. We then ask in astonishment what this brain is, whose function produces such a phenomenon of all phenomena. What is this matter that can be refined and potentiated to such a pulpy mass, that the stimulation of a few of its particles becomes the conditional supporter of the existence of an objective world? The dread of such questions drove men to the hypothesis of the simple substance of an immaterial soul, which merely dwelt in the brain. We say fearlessly that this pulpy mass, like every vegetable or animal part, is also an organic structure, like all its humbler relations in the inferior dwelling-place of our irrational brothers' heads, down to the humblest that scarcely apprehends. Nevertheless, that organic pulpy mass is nature's final product, which presupposes all the rest. In itself, however, and outside the representation, the brain too, like everything else, is will. To-exist-for-another is to-be-represented; being-in-itself is to will. Precisely to this is due the fact that, on the purely objective path, we never attain to the inner nature of things, but if we attempt to find their inner nature from outside and empirically, this inner always becomes an outer in our hands; the pith of the tree as well as its bark; the heart of the animal as well as its hide; the white and the yolk of an egg as well as its shell. On the subjective path, however, the inner nature is at every moment accessible to us, for we find it as the will primarily within ourselves; and with the clue of the analogy with our own inner nature, it must be possible for us to unravel the rest, since we attain to the insight that a being-in-itself, independent of being known, that is, of exhibiting itself in an intellect, is conceivable only as a willing.
Now if in the objective comprehension of the intellect we go back as far as we can, we shall find that the necessity or need of knowledge in general arises from the plurality and separate existence of beings, from individuation. For let us imagine that there exists only a single being, then such a being needs no knowledge, because there would not then exist anything different from that being itself, -- anything whose existence such a being would therefore have to take up into itself only indirectly through knowledge, in other words, through picture and concept. It would already itself be all in all; consequently there would remain nothing for it to know, in other words, nothing foreign that could be apprehended as object. On the other hand, with the plurality of beings, every individual finds itself in a state of isolation from all the rest, and from this arises the necessity for knowledge. The nervous system, by means of which the animal individual first of all becomes conscious of itself, is bounded by a skin; yet in the brain raised to intellect, it crosses this boundary by means of its form of knowledge, causality, and in this way perception arises for it as a consciousness of other things, as a picture or image of beings in space and time, which change in accordance with causality. In this sense it would be more correct to say "Only the different is known by the different," than, as Empedocles said, "Only the like is known by the like," which was a very indefinite and ambiguous proposition; although points of view may well be expressed from which it is true; as, for instance, that of Helvetius, when he observes beautifully and strikingly: Il n'y a que l'esprit qui sente l'esprit: c'est une corde qui ne fremit qu'a l'unison; [2] this corresponds to Xenophanes' [x] (sapientem esse oportet eum qui sapientem agniturus sit), [3] and is a great and bitter grief. But we know again from the other side that, conversely, plurality of the homogeneous becomes possible only through time and space, i.e., through the forms of our knowledge. Space first arises by the knowing subject seeing outwards; it is the manner in which the subject apprehends something as different from itself. But we just now saw that knowledge in general is conditioned by plurality and difference. Therefore knowledge and plurality, or individuation, stand and fall together, for they condition each other. It is to be concluded from this that, beyond the phenomenon, in the true being-in-itself of all things, to which time and space, and therefore plurality, must be foreign, there cannot exist any knowledge. Buddhism describes this as Prajna Paramita, i.e., that which is beyond all knowledge. (See I. J. Schmidt, On the Mahayana and Prachna-Paramita.) Accordingly, a "knowledge of things-in-themselves" in the strictest sense of the word, would be impossible, because where the being-in-itself of things begins, knowledge ceases, and all knowledge primarily and essentially concerns merely phenomena. For it springs from a limitation, by which it is rendered necessary, in order to extend the limits.
For the objective consideration, the brain is the efflorescence of the organism; therefore only where the organism has reached its highest perfection and complexity does the brain appear in its greatest development. But in the preceding chapter we recognized the organism as the objectification of the will; hence the brain, as part of the organism, must belong to this objectification. Further, from the fact that the organism is only the visibility of the will, and thus in itself is this will, I have deduced that every affection of the organism simultaneously and immediately affects the will, in other words, is felt pleasantly or painfully. Yet through the enhancement of sensibility, with the higher development of the nervous system, there arises the possibility that in the nobler, i.e., objective, sense-organs (sight and hearing), the extremely delicate affections appropriate to them are felt without affecting the will immediately and in themselves, in other words, without being painful or pleasant; and that in consequence they appear in consciousness as in themselves indifferent, merely perceived, sensations. But in the brain this enhancement of sensibility reaches such a high degree that on received sense-impressions there even occurs a reaction. This reaction does not come directly from the will, but is primarily a spontaneity of the function of understanding, a function that makes the transition from the directly perceived sensation of the senses to the cause of this sensation. In this way there arises the perception or intuition of an external object, since here the brain simultaneously produces the form of space. We can therefore regard as the boundary between the world as will and the world as representation, or even as the birth-place of the latter, the point where, from the sensation on the retina, still a mere affection of the body and to that extent of the will, the understanding makes the transition to the cause of that sensation. The understanding projects the sensation, by means of its form of space, as something external and different from its own person. But with man the spontaneity of the brain's activity, conferred of course in the last instance by the will, goes farther than mere perception and immediate apprehension of causal relations. It extends to the formation of abstract concepts from those perceptions, and to operating with them, in other words, to thinking, as that in which man's reason (Vernunft) consists. The ideas, therefore, are farthest removed from the affections of the body, and since this body is the objectification of the will, these can pass at once into pain through intensification, even in the organs of sense. In accordance with what we have said, representation and idea can also be regarded as the efflorescence of the will, in so far as they spring from the highest perfection and enhancement of the organism; but, in itself and apart from the representation, this organism is the will. In my explanation, the existence of the body certainly presupposes the world of representation, in so far as it also, as body or real object, is only in this world. On the other hand, the representation itself just as much presupposes the body, for it arises only through the function of an organ of the body. That which lies at the foundation of the whole phenomenon, that in it which alone is being-in-itself and is original, is exclusively the will; for it is the will which, through this very process, assumes the form of the representation, in other words, enters into the secondary existence of an objective world, the sphere of the knowable. The philosophers before Kant, with few exceptions, attempted from the wrong side to explain how our knowledge comes about. They started from a so-called soul, an entity whose inner nature and peculiar function consisted in thinking, indeed quite specially in abstract thinking, with mere concepts; and these belonged to it the more completely the farther they lay from all perceptibility. (Here I request the reader to look up the note at the end of § 6 in my essay On the Basis of Morality.) This soul is supposed to have come into the body in some inconceivable way, and there suffers only disturbances in its pure thinking first from sense-impressions and perceptions, still more from the desires that these excite, and finally from the emotions, in fact the passions, into which these desires develop. On the other hand, this soul's own and original element is said to be pure, abstract thinking; left to this, it has only universals, inborn concepts, and aeternae veritates for its objects, and leaves everything of perception lying far below it. Hence arises the contempt with which even now "sensibility" and the "sensible" or "sensuous" are referred to, and are even made by the professors of philosophy the chief source of immorality; whereas because the senses, in combination with the a priori functions of the intellect, produce perception, it is precisely these that are the pure and innocent source of all our knowledge, from which all thinking first borrows its contents. We might really suppose that, in speaking of sensibility, these gentlemen always thought only of the pretended sixth sense of the French. Therefore, as previously stated, in the process of knowledge, its ultimate product, namely abstract thinking, was made the first and original thing, and accordingly, as I have said, the matter was tackled from the wrong end. According to my account, the intellect springs from the organism, and thus from the will, and so without this could not exist. Without the will, it would find no material and nothing to occupy it, since everything knowable is just the objectification of the will.
But not only is perception of the external world, or the consciousness of other things, conditioned by the brain and its functions, but so is self-consciousness also. The will in itself is without consciousness, and in the greatest part of its phenomena remains so. The secondary world of the representation must be added for the will to become conscious of itself, just as light becomes visible only through the bodies that reflect it, and otherwise loses itself ineffectually in darkness. Since the will, for the purpose of comprehending its relations with the external world, produces in the animal individual a brain, the consciousness of itself first arises in this by means of the subject of knowledge, and this subject comprehends things as existing and the I or ego as willing. Thus the sensibility, enhanced to the highest degree in the brain and yet spread through its different parts, must first of all bring together all the rays of its activity, concentrate them, so to speak, in a focus; yet this focal point lies not without, as with concave mirrors, but within, as with convex. With this point, sensibility first of all describes the line of time on which everything represented by it must exhibit itself, and which is the first and most essential form of all knowing, or the form of the inner sense. This focal point of the whole activity of the brain is what Kant called the synthetic unity of apperception. [*] Only by means of this does the will become conscious of itself, since this focus of the brain's activity, or that which knows, apprehends itself as identical with its own basis from which it has sprung, i.e., with what wills, and thus arises the ego. Nevertheless, this focus of brain-activity remains primarily a mere subject of knowing, and, as such, capable of being the cold and indifferent spectator, the mere guide and counsellor of the will, and also of comprehending the external world purely objectively, regardless of the will and of its weal or woe. But as soon as it is directed inwards, it recognizes the will as the basis of its own phenomenon, and therefore merges with this will into the consciousness of an ego. That focus of brain-activity (or the subject of knowledge) is indeed, as an indivisible point, simple, yet it is not on that account a substance (soul), but a mere condition or state. That of which it itself is a state or condition can be known by it only indirectly, through reflection as it were. But the cessation of the state or condition cannot be regarded as the annihilation of that of which it is a state or condition. This knowing and conscious ego is related to the will, which is the basis of its phenomenal appearance, as the image in the focus of the concave mirror is to that mirror itself; and, like that image, it has only a conditioned, in fact, properly speaking, a merely apparent reality. Far from being the absolutely first thing (as Fichte taught, for example), it is at bottom tertiary, since it presupposes the organism, and the organism presupposes the will. I admit that everything said here is really only metaphor and figure of speech, in part even hypothetical; but we stand at a point which thoughts and ideas, much less proofs, scarcely reach. I therefore ask the reader to compare it with what I have set forth at length on this subject in chapter 20.
Now, although the true being-in-itself of every existing thing consists in its will, and knowledge together with consciousness is added only as something secondary at the higher stages of the phenomenon, we find nevertheless that the difference placed between one being and another by the presence and different degree of consciousness and intellect is exceedingly great, and has important results. We must picture to ourselves the subjective existence of the plant as a weak analogue, a mere shadow of comfortable and uncomfortable feeling; and even in this extremely weak degree, the plant knows only of itself, not of anything outside it. On the other hand, even the lowest animal that stands next to it is induced by enhanced and more definitely specified needs to extend the sphere of its existence beyond the limit of its own body. This takes place through knowledge. It has a dull perception of its immediate surroundings out of which motives for its action arise for the purpose of its maintenance and support. Accordingly, the medium of motives appears in this way, and this is -- the world standing out objectively in time and space, the world as representation, however feeble, dull, and dimly dawning this first and lowest specimen of it may be. Yet it is marked more and more distinctly, more and more widely and deeply, in proportion as the brain is more and more perfectly produced in the ascending series of animal organizations. But this enhancement of brain-development, and hence of the intellect and of the clearness of the representation, at each of these ever higher stages, is brought about by the ever-increasing and more complicated need of these phenomena of the will. This need must always first give rise to it, for without need or want nature (in other words, the will objectifying itself therein) produces nothing, least of all the most difficult of her productions, a more perfect brain, in consequence of her lex parsimoniae: Natura nihil agit frustra et nihil facit supervacaneum. [4] She has equipped every animal with the organs necessary for its maintenance and support, with the weapons necessary for its conflict, as I have explained at length in the work On the Will in Nature under the heading "Comparative Anatomy." Therefore by the same standard, she has imparted to each the most important of the organs directed outwards, namely the brain with its function, i.e., the intellect. Thus the more complicated its organization became through higher development, the more manifold and specially determined became its needs; consequently, the more difficult and dependent on opportunity became the procuring of what satisfies them. Therefore, a wider range of vision, a more accurate comprehension, a more correct distinction of things in the external world in all their circumstances and relations were here required. Accordingly, we see the powers of representation and their organs, brain, nerves, and organs of sense, appear more and more perfect, the higher we ascend in the scale of animals; and in proportion as the cerebral system develops, does the external world appear in consciousness ever more distinct, many-sided, and complete. The comprehension of the world now demands more and more attention, and ultimately to such an extent that at times its relation to the will must be momentarily lost sight of, so that it may occur the more purely and correctly. This quite definitely appears first in the case of man; only with him does a pure separation of knowing from willing occur. This is an important point that I merely touch on here, to indicate its place, so as to be able to take it up again later on. But this last step in extending and perfecting the brain, and thus increasing the powers of knowledge, is taken by nature, like all the rest, merely in consequence of the increased needs, and hence in the service of the will. What this will aims at and attains in man is indeed essentially the same as, and not more than, what its goal is in the animal, nourishment and propagation. But through the organization of man the requirements for the attainment of that goal were so greatly increased, enhanced, and specified, that an incomparably more important enhancement of the intellect than that offered by previous stages was necessary, or at any rate was the easiest means of attaining the end. But as the intellect, in consequence of its very essence, is a tool of exceedingly varied and extensive uses, and is equally applicable to the most heterogeneous aims and objects, nature, true to her spirit of parsimony, could now meet through it alone all the demands of the wants and needs that had become so manifold. Therefore she sent man forth without clothing, without natural weapons of defence or of attack, indeed with relatively little muscular strength, great weakness, and little endurance against adverse influences and deficiencies. This she did in reliance on that one great tool, for which she had to retain only the hands of the next stage below him, the ape. But through the preponderating intellect that here appears, not only are the comprehension of the motives, their multiplicity and variety, and generally the horizon of the aims infinitely increased, but the distinctness with which the will is conscious of itself is also enhanced in the highest degree, in consequence of the clearness of the whole consciousness which has come about. This clearness, supported by the capacity for abstract knowledge, now reaches complete reflectiveness. But in this way, as also through the vehemence of the will, necessarily presupposed as the supporter of so enhanced an intellect, there appeared a heightening of all the emotions, indeed the possibility of passions, which, in the proper sense, are unknown to the animal. For the vehemence of the will keeps pace with the enhancement of the intelligence, just because in reality this enhancement always springs from the will's increased needs and more pressing demands; but in addition to this, the two mutually support each other. Thus the vehemence of the character is connected with greater energy of heart-beat and of blood circulation, which physically heightens the activity of the brain. On the other hand, clearness of intelligence again heightens the emotions produced through external circumstances by means of the more lively apprehension of them. Therefore young calves, for example, calmly allow themselves to be packed into a cart and dragged off; but young lions, if only separated from their mother, remain permanently restless and roar incessantly from morning till night; children in such a situation would cry and worry themselves almost to death. The liveliness and impetuosity of the ape are connected precisely with its greatly developed intelligence. It depends precisely on this reciprocal relationship that man is generally capable of much greater sorrows than is the animal, but also of greater joy in satisfied and happy emotions. In just the same way, enhanced intellect makes him more susceptible to boredom than the animal; but, if it is individually very complete, it also becomes a perennial source of diversion and entertainment. Thus on the whole, the phenomenal appearance of the will in man is related to that in the animal of a higher species as a note that is struck is to its fifth pitched two or three octaves lower. But even between the different species of animals, the differences of intellect and therefore of consciousness are great and endlessly graduated. The mere analogue of consciousness, which we must ascribe to the plant, will be related to the still far duller subjective inner being of an inorganic body in much the same way as the consciousness of the lowest animal is related to this quasi-consciousness of the plant. We can picture to ourselves the innumerable gradations in degree of consciousness from the illustration of the different velocity of points on a disc which are situated at different distances from the centre. But the most correct, and indeed, as our third book teaches, the natural illustration of that gradation is afforded by the musical scale in its whole range from the lowest audible note to the highest. But it is the degree of consciousness that determines the degree of a being's existence. For all immediate existence is subjective; objective existence is present in the consciousness of another, and hence is only for this other; consequently it is quite indirect. Through the degree of consciousness beings are as different as through the will they are alike, in so far as this will is what is common to them all.
However, what we have now considered as between plant and animal, and again between the different species of animals, also occurs between one man and another. Thus what is secondary, namely the intellect, here sets up, by means of the clearness of consciousness and the distinctness of knowledge dependent on it, a fundamental and immeasurably great difference in the whole mode, and thus in the degree, of existence. The higher the consciousness has risen, the more distinct and connected are the thoughts and ideas, the clearer the perceptions, the deeper and profounder the sensations. In this way everything gains more depth: emotion, sadness, joy, and sorrow. Ordinary shallow minds are not even capable of real joy; they live on in dull insensibility. Whereas one man's consciousness presents to him only his own existence, together with the motives that must be apprehended for the purpose of sustaining and enlivening it, in a bare and inadequate apprehension of the external world, to another person his own consciousness is a camera obscura in which the macrocosm exhibits itself:
He feels he holds a little world
Brooding in his brain,
That it begins to act and live,
That it from himself he fain would give. [5]
The difference of the whole mode of existence established between one man and another by the extremes of gradation of intellectual abilities is so great, that that between a king and an artisan seems small by comparison. Here also, as in the case of animal species, a connexion can be shown between the vehemence of the will and the enhancement of the intellect. Genius is conditioned by a passionate temperament, and a phlegmatic genius is inconceivable. It seems that an exceedingly vehement and hence strongly desiring will must exist, if nature is to provide an abnormally heightened intellect as appropriate to it, whilst the merely physical account of this points to the greater energy with which the arteries of the head move the brain and increase its turgescence. But the quantity, quality, and form of the brain itself are of course the other and incomparably rarer condition of genius. On the other hand, phlegmatic persons are as a rule of very moderate mental powers, and so the northern, cold-blooded, and phlegmatic nations are in general noticeably inferior in mind to the southern, vivacious, and passionate races; although, as Bacon has most strikingly observed, [6] when once a northerner is highly gifted by nature, he can reach a degree never attained by a southerner. Accordingly, it is as absurd as it is common to take the great minds of the different nations as the standard for comparing those nations' mental powers; for this is equivalent to trying to establish the rule through the exceptions. On the contrary, it is the great majority of every nation that we have to consider; for one swallow does not make a summer. It has still to be observed here that the very passionateness that is a condition of genius, and is bound up with the genius's vivid apprehension of things, produces in practical life, where the will comes into play, especially in sudden emergencies, so great an excitement of the emotions that it disturbs and confuses the intellect. The phlegmatic man, on the other hand, still retains the full use of his mental powers, although these are much more limited; and then he achieves far more with these than the greatest genius can. Accordingly, a passionate temperament is favourable to the original quality of the intellect; but a phlegmatic one is favourable to its use. Therefore genius proper is only for theoretical achievements, for which it can choose and bide its time. This time will be precisely when the will is entirely at rest, and no wave disturbs the clear mirror of the world-view. Genius, on the other hand, is unqualified and unserviceable for practical life, and is therefore often unlucky and unhappy. Goethe's Tasso is written in this sense. Now just as genius proper rests on the absolute strength and vigour of the intellect, which must be paid for by a correspondingly excessive vehemence of disposition, so great preeminence in practical life, which makes generals and statesmen, rests on the relative strength of the intellect, on the highest degree of it which can be attained without too great an excitability of the emotions, together with too great a vehemence of character, and which therefore holds its own even in the storm. Here great firmness of will and imperturbability of mind, together with a capable and fine understanding, are sufficient; and what goes beyond this has a detrimental effect, for too great a development of intelligence stands right in the way of firmness of character and resoluteness of will. Accordingly this kind of eminence is not so abnormal, and is a hundred times less rare than that other; and so we see great generals and great ministers appear at all times, whenever external circumstances are favourable to their activity. On the other hand, great poets and philosophers are centuries in coming; yet humanity may rest content with even this rare appearance of them, for their works remain, and do not exist merely for the present, as do the achievements of those others. It is also wholly in accordance with the above-mentioned law of the parsimony of nature that she bestows intellectual eminence generally on extremely few, and genius only as the rarest of all exceptions. She equips the great mass of the human race, however, with no more mental powers than are required for the maintenance of the individual and the species. For the great needs of the human race are constantly increased by their very satisfaction, and make it necessary for the large majority to spend their lives in rough physical and wholly mechanical work. For what would be the use to such persons of a lively mind, a glowing imagination, a subtle understanding, or a profound and penetrating discrimination? Such qualities would merely make them misfits and unhappy. Nature has therefore dealt with the most precious of all her productions in the least extravagant way. In order not to judge unfairly, we should also definitely settle our expectations of the mental achievements of people generally from this point of view. For example, as even scholars have, as a rule, become such merely through external causes, we should regard them primarily as men who are really destined by nature for farming and wood-cutting. In fact, even professors of philosophy should be estimated according to this standard, and then their achievements will be found to come up to all reasonable expectations. It is noteworthy that in the south, where the cares of life weigh less heavily on the human race and more leisure is given it, the mental faculties even of the mob at once become more active and acute. Physiologically, it is remarkable that the preponderance of the mass of the brain over that of the spinal cord and nerves, which according to Sommering's clever discovery affords the true and closest measure of the degree of intelligence both in animal species and in individual men, at the same time increases the direct mobility, the agility, of the limbs. For through the great inequality of the relation, the dependence of all the motor nerves on the brain becomes more decided. In addition to this, we have the fact that the cerebellum, that primary controller of movement, shares the qualitative perfection of the cerebrum. Therefore through both, all arbitrary movements gain greater facility, rapidity, and manageableness; and through the concentration of the starting-point of all activity there arises what Lichtenberg praises in Garrick, namely that "he appeared wholly present in the muscles of his body." Heaviness in the movement of the body, therefore, indicates heaviness in the movement of thoughts and ideas; and it is regarded as a sign of dulness and stupidity both in individuals and in nations, just as are flabbiness of the facial features and feebleness of the glance. Another symptom of the physiological facts of the case referred to is the circumstance that many people have at once to stand still, as soon as their conversation with anyone accompanying them begins to have some connexion. For as soon as their brain has to link a , few ideas together, it no longer has as much force left over as is I required to keep the legs in motion through the motor nerves; with them everything is so fine and close-cut.
The result of the whole of this objective consideration of the intellect and of its origin is the fact that it is designed for comprehending those ends on the attainment of which depend individual life and its propagation. But such an intellect is by no means destined to interpret the inner essence-in-itself of things and of the world, which exists independently of the knower. What susceptibility to light, in consequence of which it guides its growth in the direction of the light, is to the plant is the same in kind as knowledge to the animal, in fact even to man, although it is enhanced in degree in proportion as the needs of each of these beings demand. With all of them, perception or apprehension remains a mere awareness of their relation to other things, and is by no means intended to present once again the true, absolutely real inner nature of these things in the consciousness of the knower. On the contrary, as springing from the will, the intellect is designed for the will's service, and hence for the comprehension of motives; to this it is adapted, and so it is thoroughly practical in tendency. This also holds good in so far as we conceive the metaphysical significance of life as ethical; for in this sense too, we find man a knower only with a view to his conduct. Such a faculty of knowledge, existing exclusively for practical ends, will by its nature always comprehend only the relations of things to one another, not their inner nature as it is in itself. But to regard the complex of these relations as the inner being of the world, which exists absolutely and in itself, and the manner in which they necessarily exhibit themselves according to laws preformed in the brain as the eternal laws of the existence of all things, and then to construct ontology, cosmology, and theology on this pattern -- all this was really the ancient fundamental error, which Kant's teaching brought to an end. Here, then, our consideration of the intellect, objective and thus for the most part physiological, meets his transcendental consideration; in fact, in a sense, it even appears as an a priori insight into it, since, from an external standpoint that we have taken, our objective consideration enables us to know genetically, and thus as necessary, what the transcendental consideration, starting from facts of consciousness, presents only as a matter of fact. For in consequence of our objective consideration of the intellect, the world as representation, as it exists extended in space and time and continues to move regularly according to the strict rule of causality, is primarily only a physiological phenomenon, a function of the brain that brings this about on the occasion of certain external stimuli, it is true, but yet in accordance with its own laws. Accordingly, it is already a matter of course that what goes on in this function itself, and consequently through it and for it, cannot possibly be regarded as the quality or nature of things-in-themselves that exist independently of and are entirely different from it; but primarily exhibits merely the mode and manner of this function itself. This can always receive only a very minor modification through that which exists wholly independent of it, and as stimulus sets it in motion. Accordingly, just as Locke claimed for the organs of sense all that comes into perception or apprehension by means of sensation, in order to deny it to things-in-themselves, so Kant, with the same purpose and pursuing the same path, showed everything that makes real perception possible, namely space, time, and causality, to be brain-function. He refrained, however, from using this physiological expression, to which our present method of consideration necessarily leads us, coming as it does from the op posite, the real side. On his analytical path, Kant reached the result that what we know is mere phenomena. What this puzzling expression really means becomes clear from our objective and genetic consideration of the intellect. The phenomena are the motives for the purposes and aims of an individual will, as they exhibit themselves in the intellect produced by the will for this purpose (this intellect itself appears objectively as brain); and when they are comprehended as far as we can follow their concatenation, they furnish in their continuity and sequence the world extending itself in time and space, which I call the world as representation. Moreover, from our point of view, the objectionable element to be found in the Kantian doctrine disappears. This element arises from the fact that, since the intellect knows mere phenomena instead of things as they are in themselves, and in fact in consequence of them is led astray into paralogisms and unfounded hypostases by means of "sophistications, not of persons but of reason itself, from which even the wisest cannot rid himself, and when perhaps after much effort he is able to prevent error, he can never get rid of the delusion that incessantly worries and mocks him" -- this element, I say, makes it appear as if our intellect were intentionally designed to lead us into error. For the objective view of the intellect here given, which contains a genesis of it, makes it conceivable that, being destined exclusively for practical ends, the intellect is the mere medium of motives. Consequently, it fulfils its mission by correctly presenting these, and if we undertake to construct the true nature of things-in-themselves from the complex and conformity to law of the phenomena that objectively present themselves to us here, it is done at our own peril and on our own responsibility. Thus we have recognized that the inner force of nature, originally without knowledge and working in the dark, which, if it has worked its way up to self-consciousness, reveals itself thereto as will, reaches this stage only by the production of an animal brain and of knowledge as the function thereof, whereupon there arises in this brain the phenomenon of the world of perception. But to declare this mere brain-phenomenon, with the conformity to law that invariably belongs to its functions, to be the objective being-in-itself of the world and of the things in it -- a being-in itself that exists independently of this phenomenon, before it and after it-is obviously a leap that nothing warrants us in taking. From this mundus phaenomenon, however, from this perception arising under such a variety of conditions, all our concepts are drawn; they have all their content only from it, indeed only in relation to it. Therefore, as Kant says, they are only for immanent, not for transcendent use; in other words, these concepts of ours, this first material of thinking, and so still more the judgements resulting from their combination, are unsuitable for the task of reflecting on the inner essence of things-in-themselves and on the true connexion of the world and of existence. Indeed, to undertake this is analogous to expressing the cubical contents of a body in square inches. For our intellect, originally intended only to present to an individual will its paltry aims, accordingly comprehends mere relations of things, and does not penetrate to their inner being, their true nature. Accordingly it is a mere superficial force, clinging to the surface of things, and grasping mere species transitivae, [7] not their true being. The result is that we cannot understand and grasp a single thing, even the simplest and smallest, through and through, but in everything there is something left over that remains entirely inexplicable to us. Just because the intellect is a product of nature, and is therefore adapted only for her aims and ends, the Christian mystics have very aptly called it the "light of nature," and have kept it within bounds; for nature is the object to which it alone is the subject. The idea from which the Critique of Pure Reason sprang is really at the root of this expression. That we cannot comprehend the world on the direct path, in other words, through the uncritical, direct application of the intellect and its data, but are ever more deeply involved in insoluble riddles when we reflect on it, points to the fact that the intellect, and so knowledge itself, is already something secondary, a mere product. It is brought about by the development of the inner being of the world, which consequently till then preceded it; and it finally appeared as a breaking through into the light from the obscure depths of the striving without knowledge, and the true nature of such striving exhibits itself as will in the self-consciousness that simultaneously arises in this way. That which precedes knowledge as its condition, whereby that knowledge first of all became possible, and hence its own basis, cannot be immediately grasped by knowledge, just as the eye cannot see itself. On the contrary. the relations that exhibit themselves on the surface of things between one being and another are its sole concern, and are so only by means of the apparatus of the intellect, that is, its forms, time, space. causality. Just because the world has made itself without the aid of knowledge, its whole inner being does not enter into knowledge, but knowledge presupposes the existence of the world, and for this reason the origin of the world's existence does not lie within the province of knowledge. Accordingly, knowledge is limited to the relations between existing things, and is thus sufficient for the individual will, for whose service alone it arose. For, as has been shown, the intellect is conditioned by nature, resides therein, belongs thereto, and therefore cannot be set up in opposition to nature as something entirely foreign to it, in order thus to assimilate absolutely, objectively, and thoroughly nature's whole inner essence. With the help of good fortune, the intellect can understand everything in nature, but not nature itself, at any rate not immediately.
However discouraging for metaphysics this essential limitation of the intellect may be, resulting as it does from the intellect's nature and origin, there is yet another very consoling side to it. It deprives the direct utterances of nature of their unconditional validity, in the assertion of which naturalism proper consists. Thus nature presents to us every living thing as arising out of nothing, and, after an ephemeral existence, returning for ever into nothing again; and she seems to take a delight in ceaselessly creating afresh, in order to be able ceaselessly to destroy. On the other hand, she is unable to bring to light anything lasting or enduring. Accordingly we have to recognize matter as the only permanent thing, as that which never originated and never passes away, which brings forth everything from its womb; for this reason, its name seems to have come from mater rerum. Along with matter we have to recognize, as the father of things, form, which, just as fleeting as matter is permanent, really changes every moment, and can maintain itself only so long as it clings parasitically to matter (now to one part thereof, now to another). But when once form entirely loses its hold, it ceases to exist, as is testified by the palaeotherium and the ichthyosaurus. If we consider all this, we must indeed recognize it as the direct and genuine utterance of nature; but, on account of the origin of the intellect previously explained, and of the nature of the intellect that results from this origin, we cannot grant an unconditional truth to this utterance, but in general only a conditional, which Kant has strikingly indicated as such by calling it the phenomenon as opposed to the thing-in-itself.
If, in spite of this essential limitation of the intellect, it becomes possible in a roundabout way, by means of widely pursued reflection and by the ingenious connexion of outwardly directed objective knowledge with the data of self-consciousness, to arrive at a certain understanding of the world and the inner essence of things, this will nevertheless be only a very limited, entirely indirect, and relative understanding, a parabolic translation into the forms of knowledge, hence a quadam prodire tenus, [8] which must leave many problems still unsolved. On the other hand, the fundamental mistake of the old dogmatism in all its forms, which Kant destroyed, was that it started absolutely from knowledge, i.e., from the world as representation, in order to deduce and construct being in general from the laws of knowledge. Such dogmatism took that world of the representation, together with its laws, to be something positively existing and absolutely real; whereas the whole existence of that world is fundamentally relative, and a mere result or phenomenon of the true being-in-itself that lies at its root; or in other words, dogmatism constructed an ontology where it had material only for a dianoiology. Kant discovered the subjectively conditioned, and thus positively immanent, nature of knowledge, in other words, its unsuitability for transcendent use, from this knowledge's own conformity to law. He therefore very appropriately called his teaching the Critique of Reason. He carried this out partly by showing the considerable and universally a priori portion of all knowledge, which, as being absolutely subjective, vitiates all objectivity; and partly by ostensibly proving that the principles of knowledge, taken as purely objective, led to contradictions when followed out to the end. But he had too hastily assumed that, apart from objective knowledge, in other words, apart from the world as representation, nothing is given to us except perhaps conscience. From this he constructed the little of metaphysics that still remained, namely moral theology, to which, however, he granted positively only a practical, certainly not a theoretical, validity. He had overlooked the fact that, although objective knowledge, or the world as representation, certainly affords nothing but phenomena, together with their phenomenal connexion and regressus, our own inner being nevertheless belongs of necessity to the world of things-in-themselves, since this inner being must be rooted in such a world. From this, however, even if the root cannot be directly brought to light, it must yet be possible to lay hold of some data for explaining the connexion between the world of phenomena and the being-in-itself of things. Here, therefore, lies the path on which I have gone beyond Kant and the limit he set. But in doing this, I have always stood on the ground of reflection, consequently of honesty, and hence without the vain pretension of intellectual intuition or absolute thought that characterizes the period of pseudo-philosophy between Kant and myself. In his proof of the inadequacy of rational knowledge for fathoming the inner nature of the world, Kant started from knowledge as a fact furnished by our consciousness; thus in this sense, he proceeded a posteriori. In this chapter, however, as well as in my work On the Will in Nature, I have tried to show what knowledge is according to its essence and origin, that is, something secondary destined for individual ends. From this it follows that knowledge is bound to be inadequate for fathoming the true nature of the world; and so to this extent I have reached the same goal a priori. But we do not know anything wholly and completely until we have gone right round it, and have arrived back at the starting-point from the other side. Therefore, in the case of the important fundamental knowledge considered here, we must also go not merely from intellect to knowledge of the world, as Kant did, but also, as I have undertaken to do here, from the world, taken as given, to the intellect. Then in the wider sense this physiological consideration becomes the supplement to that ideological, as the French say, or more accurately transcendental, consideration.
In order not to break the thread of the discussion, I have in the above remarks postponed the explanation of one point I have touched on. This was that, in proportion as the intellect appears more and more developed and complete in the ascending series of animals, knowing is more and more distinctly separated from willing, and thereby becomes purer. What is essential on this point is to be found in my work On the Will in Nature under the heading "Physiology of Plants" (pp. 68-72 of the second edition), and to that I refer, in order to avoid repetition; here I add only a few remarks. Since the plant possesses neither irritability nor sensibility, but in it the will objectifies itself only as plasticity or reproductive force, it has neither muscle nor nerve. At the lowest stages of the animal kingdom, in the zoophytes, especially the polyps, we are still unable to recognize distinctly the separation of these two constituent parts, yet we assume their existence, although in a state of fusion, since we perceive movements occurring, not on mere stimuli like those of the plant, but on motives, in other words, in consequence of a kind of perception or apprehension. Now in the ascending series of animals, the nervous and muscular systems separate ever more distinctly from each other, till in the vertebrates, and most completely in man, the nervous system is divided into an organic and a cerebral nervous system. This cerebral nervous system, again, is developed to the extremely complicated apparatus of the cerebrum and cerebellum, the spinal cord, cerebral and spinal nerves, sensory and motor nerve-fascicles. Of these only the cerebrum, together with the sensory nerves attached to it, and the posterior spinal nerve-fascicles are intended to take up the motives from the external world. All the other parts, on the other hand, are intended only to transmit the motives to the muscles in which the will directly manifests itself. Bearing the above separation in mind, we see the motive separated to the same extent more and more distinctly in consciousness from the act of will it calls forth, as is the representation from the will. Now in this way the objectivity of consciousness is constantly increasing, since in it the representations exhibit themselves more and more distinctly and purely. However, the two separations are really only one and the same, considered here from two sides, the objective and the subjective, or first in the consciousness of other things and then in self-consciousness. On the degree of this separation ultimately depend the difference and gradation of the intellectual abilities between the various species of animals, as well as between individual human beings; hence it gives the standard for their intellectual perfection. For on it depends clearness of consciousness of the external world, the objectivity of perception. In the passage referred to above, I have shown that the animal perceives things only in so far as they are motives for its will, and that even the most intelligent animals scarcely go beyond this limit, since their intellect is still too firmly attached to the will from which it has sprung. On the other hand, even the stupidest person comprehends things to some extent objectively, since he recognizes in them not merely what they are with reference to him, but also something of what they are with reference to themselves and other things. Yet in the case of very few does this reach such a degree that they are able to examine and judge of anything purely objectively, but their goal is "This must I do, this must I say, this must I believe"; and on every occasion their thinking hurries in a straight line to this goal where their understanding at once finds welcome relaxation. For thinking is as intolerable to the feeble head as lifting a load is to the weak arm; both hasten to put it down. The objectivity of knowledge, and above all of knowledge of perception, has innumerable degrees, depending on the energy of the intellect and its separation from the will. The highest degree is genius, in which the comprehension of the external world becomes so pure and objective that to it even more is directly revealed in the individual things than these things themselves, namely the true nature of their whole species, i.e., their Platonic Idea. This is conditioned by the fact that the will here vanishes entirely from consciousness. This is the point where the present consideration, starting from physiological foundations, is connected with the subject of our third book, the metaphysics of the beautiful. Really aesthetic comprehension, in the higher degree peculiar only to genius, is fully considered there as the state or condition of pure, that is to say wholly will-less, knowledge, which on this account is completely objective. In accordance with what has been said, the enhancement of intelligence from the dullest animal consciousness to that of man is a progressive loosening of the intellect from the will, which appears complete, although only by way of exception, in genius. Genius can therefore be defined as the highest degree of the objectivity of knowledge. The condition for this, which exists so rarely, is a decidedly greater measure of intelligence than is required for the service of the will which constitutes its foundation. Accordingly, it is only this surplus or excess becoming free that really and truly becomes aware of the world, in other words, comprehends it perfectly objectively, and then paints, writes poetry, and thinks in accordance with this comprehension.
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Notes:1. This chapter refers to the last half of § 27 of volume 1.
2. ''The mind alone is capable of understanding the mind; it is a string that vibrates only in harmony with another." [Tr.]
3. "One must be a sage to recognize a sage." [Tr.]
* Cf. p. 251.
4. "Law of parsimony: Nature does nothing in vain, and creates nothing superfluous." [Tr.]
5. From Goethe's Miscellaneous Poems. [Tr.]
6. De Augmentis Scientiarum, Bk. vi, c. 3.
7. '''Fleeting phenomena" [an expression of the scholastics. Tr.].
8. "Advance up to a certain limit." [Tr.]