Chapter 20

Objectification Of The Will In The Animal Organism

by Schopenhauer | Oct 5, 2025
11 min read 2334 words
Table of Contents

This chapter is connected with § 20 of the first volume.455

Objectification is the self-exhibition in the real corporeal world. However, this world itself, as was fully shown in the first book and its supplements, is throughout conditioned by the knowing subject, thus by the intellect, and therefore as such is absolutely inconceivable outside the knowledge of this subject; for it primarily consists simply of ideas of perception, and as such is a phenomenon of the brain. After its removal the thing in itself would remain. That this is the will is the theme of the second book, and is there proved first of all in the human organism and in that of the brutes.

The knowledge of the external world may also be defined as the consciousness of other things, in opposition to self- consciousness. Since we have found in the latter that its true object or material is the will, we shall now, with the same intention, take into consideration the consciousness of other things, thus objective knowledge. Now here my thesis is this: that which in self-consciousness, thus subjectively is the intellect, presents itself in the consciousness of other things, thus objectively, as the brain; and that which in self-consciousness, thus subjectively, is the will, presents itself in the consciousness of other things, thus objectively, as the whole organism. To the evidence which is given in support of this proposition, both in our second book and in the first two chapters of the treatise “Ueber den Willen in der Natur,” I add the following supplementary remarks and illustrations.

Nearly all that is necessary to establish the first part of this thesis has already been brought forward in the preceding chapter, for in the necessity of sleep, in the alterations that arise from age, and in the differences of the anatomical conformation, it was proved that the intellect is of a secondary nature, and depends absolutely upon a single organ, the brain, whose function it is, just as grasping is the function of the hand; that it is therefore physical, like digestion, not metaphysical, like the will. As good digestion requires a healthy, strong stomach, as athletic power requires muscular sinewy arms, so extraordinary intelligence requires an unusually developed, beautifully formed brain of exquisitely fine texture and animated by a vigorous pulse. The nature of the will, on the contrary, is dependent upon no organ, and can be prognosticated from none.

The greatest error in Gall’s phrenology is that he assigns organs of the brain for moral qualities also. Injuries to the head, with loss of brain substance, affect the intellect as a rule very disadvantageously: they result in complete or partial imbecility or forgetfulness of language, permanent or temporary, yet sometimes only of one language out of several which were known, also in the loss of other knowledge possessed, &c., &c. On the other hand, we never read that after a misfortune of this kind the character has undergone a change, that the man has perhaps become morally worse or better, or has lost certain inclinations or passions, or assumed new ones; never. For the will has not its seat in the brain, and moreover, as that which is metaphysical, it is the prius of the brain, as of the whole body, and therefore cannot be altered by injuries of the brain.

According to an experiment made by Spallanzani and repeated by Voltaire,35 a snail that has had its head cut off remains alive, and after some weeks a new head grows on, together with horns; with this consciousness and ideas again appear; while till then the snail had only given evidence of blind will through unregulated movements. Thus here also we find the will as the substance which is permanent, the intellect, on the contrary, conditioned by its organ, as the changing accident. It may be defined as the regulator of the will. It was perhaps Tiedemann who first compared the cerebral nervous system to a parasite (Tiedemann und Trevirann’s Journal für Physiologie, Bd. i. § 62). The comparison is happy; for the brain, together with the spinal cord and nerves which depend upon it, is, as it were, implanted in the organism, and is nourished by it without on its part directly contributing anything to the support of the economy of the organism; therefore there can be life without a brain, as in the case of brainless abortions, and also in the case of tortoises, which live for three weeks after their heads have been cut off; only the medulla oblongata, as the organ of respiration, must be spared. Indeed a hen whose whole brain Flourens had cut away lived for ten months and grew. Even in the case of men the destruction of the brain does not produce death directly, but only through the medium of the lungs, and then of the heart (Bichat, Sur la Vie et la Mort, Part ii., art. ii. § 1). On the other hand, the brain controls the relations to the external world; this alone is its office, and hereby it discharges its debt to the organism which nourishes it, since its existence is conditioned by the external relations. Accordingly the brain alone of all the parts requires sleep, because its activity is completely distinct from its support; the former only consumes both strength and substance, the latter is performed by the rest of the organism as the nurse of the brain: thus because its activity contributes nothing to its continued existence it becomes exhausted, and only when it pauses in sleep does its nourishment go on unhindered. The second part of our thesis, stated above, will require a fuller exposition even after all that I have said about it in the writings referred to. I have shown above, in chapter 18, that the thing in itself, which must lie at the foundation of every phenomenon, and therefore of our own phenomenal existence also, throws off in self-consciousness one of its phenomenal forms—space, and only retains the other—time. On this account it presents itself here more immediately than anywhere else, and we claim457 it as will, according to its most undisguised manifestation. But no permanent substance, such as matter is, can present itself in time alone, because, as § 4 of the first volume showed, such a substance is only possible through the intimate union of space and time. Therefore, in self-consciousness the will is not apprehended as the enduring substratum of its impulses, therefore is not perceived as a permanent substance; but only its individual acts, such as purposes, wishes, and emotions, are known successively and during the time they last, directly, yet not perceptibly. The knowledge of the will in self-consciousness is accordingly not a perception of it, but a perfectly direct becoming aware of its successive impulses. On the other hand, for the knowledge which is directed outwardly, brought about by the senses and perfected in the understanding, which, besides time, has also space for its form, which two it connects in the closest manner by means of the function of the understanding, causality, whereby it really becomes perception—this knowledge presents to itself perceptibly what in inner immediate apprehension was conceived as will, as organic body, whose particular movements visibly present to us the acts, and whose parts and forms visibly present to us the sustained efforts, the fundamental character, of the individually given will, nay, whose pain and comfort are perfectly immediate affections of this will itself.

We first become aware of this identity of the body with the will in the individual actions of the two, for in these what is known in self-consciousness as an immediate, real act of will, at the same time and unseparated, exhibits itself outwardly as movement of the body; and every one beholds the purposes of his will, which are instantaneously brought about by motives which just as instantaneously appear at once as faithfully copied in as many actions of his body as his body itself is copied in his shadow; and from this, for the unprejudiced man, the knowledge arises in the simplest manner that his body is merely the outward manifestation of his will, i.e., the way in which his will exhibits itself in his perceiving intellect, or his will itself under the form of the idea. Only if we forcibly deprive ourselves of this primary and simple information can we for a short time marvel at the process of our own bodily action as a miracle, which then rests on the fact that between the act of will and the action of the body there is really no causal connection, for they are directly identical, and their apparent difference only arises from the circumstance that here what is one and the same is apprehended in two different modes of knowledge, the outer and the inner. Actual willing is, in fact, inseparable from doing and in the strictest sense only that is an act of will which the deed sets its seal to. Mere resolves of the will, on the contrary, till they are carried out, are only intentions, and are therefore matter of the intellect alone; as such they have their place merely in the brain, and are nothing more than completed calculations of the relative strength of the different opposing motives. They have, therefore, certainly great probability, but no infallibility. They may turn out false, not only through alteration of the circumstances, but also from the fact that the estimation of the effect of the respective motives upon the will itself was erroneous, which then shows itself, for the deed is untrue to the purpose: therefore before it is carried out no resolve is certain. The will itself, then, is operative only in real action; hence in muscular action, and consequently in irritability. Thus the will proper objectifies itself in this. The cerebrum is the place of motives, where, through these, the will becomes choice, i.e., becomes more definitely determined by motives.

These motives are ideas, which, on the occasion of external stimuli of the organs of sense, arise by means of the functions of the brain, and are also worked up into conceptions, and then into resolves. When it comes to the real act of will these motives, the workshop of which is the cerebrum, act through the medium of the cerebellum upon the spinal cord and the motor nerves which proceed from it, which then act upon the muscles, yet merely as stimuli of their irritability; for galvanic, chemical,459 and even mechanical stimuli can effect the same contraction which the motor nerve calls forth. Thus what was motive in the brain acts, when it reaches the muscle through the nerves, as mere stimulus. Sensibility in itself is quite unable to contract a muscle. This can only be done by the muscle itself, and its capacity for doing so is called irritability, i.e., susceptibility to stimuli. It is exclusively a property of the muscle, as sensibility is exclusively a property of the nerve. The latter indeed gives the muscle the occasion for its contraction, but it is by no means it that, in some mechanical way, draws the muscle together; but this happens simply and solely on account of the irritability, which is a power of the muscle itself. Apprehended from without this is a Qualitas occulta, and only self-consciousness reveals it as the will. In the causal chain here briefly set forth, from the effect of the motive lying outside us to the contraction of the muscle, the will does not in some way come in as the last link of the chain; but it is the metaphysical substratum of the irritability of the muscle: thus it plays here precisely the same part which in a physical or chemical chain of causes is played by the mysterious forces of nature which lie at the foundation of the process—forces which as such are not themselves involved as links in the causal chain, but impart to all the links of it the capacity to act, as I have fully shown in § 26 of the first volume. Therefore we would ascribe the contraction of the muscle also to a similar mysterious force of nature, if it were not that this contraction is disclosed to us by an entirely different source of knowledge—self-consciousness as will. Hence, as was said above, if we start from the will our own muscular movement appears to us a miracle; for indeed there is a strict causal chain from the external motive to the muscular action; but the will itself is not included as a link in it, but, as the metaphysical substratum of the possibility of an action upon the muscle through brain and nerve, lies at the foundation of the present muscular action also; therefore the latter is not properly its effect but its manifestation.

As such it enters the world of idea, the form of which is the law of causality, a world which is entirely different from the will in itself: and thus, if we start from the will, this manifestation has, for attentive reflection, the appearance of a miracle, but for deeper investigation it affords the most direct authentication of the great truth that what appears in the phenomenon as body and its action is in itself will. If now perhaps the motor nerve that leads to my hand is severed, the will can no longer move it. This, however, is not because the hand has ceased to be, like every part of my body, the objectivity, the mere visibility, of my will, or in other words, that the irritability has vanished, but because the effect of the motive, in consequence of which alone I can move my hand, cannot reach it and act on its muscles as a stimulus, for the line of connection between it and the brain is broken. Thus really my will is, in this part, only deprived of the effect of the motive. The will objectifies itself directly, in irritability, not in sensibility.

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