The last part of our discussion proclaims itself as the most serious, for it concerns the actions of men, the subject of direct interest to everyone, and one which can be foreign or indifferent to none. Indeed, to refer everything else to action is so characteristic of man’s nature that, in every systematic investigation, he will always consider that part of it which relates to action as the result of its whole content, at any rate in so far as this interests him, and he will therefore devote his most serious attention to this part, even if to no other. In this respect, the part of our discussion which follows would, according to the ordinary method of expression, be called practical philosophy in contrast to the theoretical dealt with up to now. In my opinion, however, all philosophy is always theoretical, since it is essential to it always to maintain a purely contemplative attitude, whatever be the immediate object of investigation; to inquire, not to prescribe. But to become practical, to guide conduct, to transform character, are old claims which with mature insight it ought finally to abandon. For here, where it is a question of the worth or worthlessness of existence, of salvation or damnation, not the dead concepts of philosophy decide the matter, but the innermost nature of man himself, the daemon which guides him and has not chosen him, but has been chosen by him, as Plato would say; his intelligible character, as Kant puts it. Virtue is as little taught as is genius; indeed, the concept is just as unfruitful for it as it is for art, and in the case of both can be used only as an instrument. We should therefore be just as foolish to expect that our moral systems and ethics would create virtuous, noble, and holy men, as that our aesthetics would produce poets, painters, and musicians.
Philosophy can never do more than interpret and explain what is present and at hand; it can never do more than bring to the distinct, abstract knowledge of the faculty of reason the inner nature of the world which expresses itself intelligibly to everyone in the concrete, that is, as feeling. It does this, however, in every possible relation and connexion and from every point of view. Now just as in the three previous books the attempt has been made to achieve the same thing with the generality proper to philosophy, from different points of view, so in the present book man’s conduct will be considered in the same way. This side of the world might prove to be the most important of all, not only, as I remarked above, from a subjective, but also from an objective point of view. Here I shall remain absolutely faithful to the method of consideration we have hitherto followed, and shall support myself by assuming what has been stated up to now. Indeed, there is really only one thought that forms the content of this whole work, and as I have developed it hitherto as regards other subjects, I shall now develop it in the conduct of man. I shall thus do the last thing I am able to do for communicating this thought as fully and completely as possible.
The point of view given and the method of treatment announced suggest that in this ethical book no precepts, no doctrine of duty are to be expected; still less will there be set forth a universal moral principle, a universal recipe, so to speak, for producing all the virtues. Also we shall not speak of an “unconditioned ought,” since this involves a contradiction, as is explained in the Appendix; or of a “law for freedom,” which is in the same position. Generally we shall not speak of “ought” at all, for we speak in this way to children and to peoples still in their infancy, but not to those who have appropriated to themselves all the culture of a mature age. It is indeed a palpable contradiction to call the will free and yet to prescribe for it laws by which it is to will. “Ought to will!” wooden-iron! 132 But in the light of our whole view, the will is not only free, but even almighty; from it comes not only its action, but also its world; and as the will is, so does its action appear, so does its world appear; both are its self-knowledge and nothing more. The will determines itself, and therewith its action and its world also; for besides it there is nothing, and these are the will itself. Only thus is the will truly autonomous, and from every other point of view it is heteronomous. Our philosophical attempts can go only so far as to interpret and explain man’s action, and the very different and even opposite maxims of which it is the living expression, according to their innermost nature and content. This is done in connexion with our previous discussion, and in precisely the same way in which we have attempted hitherto to interpret the remaining phenomena of the world, and to bring their innermost nature to distinct, abstract knowledge. Our philosophy will affirm the same immanence here as in all that we have considered hitherto. It will not, in opposition to Kant’s great teaching, attempt to use as a jumping-pole the forms of the phenomenon, whose general expression is the principle of sufficient reason, in order to leap over the phenomenon itself, which alone gives those forms meaning, and to land in the boundless sphere of empty fictions. This actual world of what is knowable, in which we are and which is in us, remains both the material and the limit of our consideration. It is a world so rich in content that not even the profoundest investigation of which the human mind is capable could exhaust it. Now since the real, knowable world will never fail to afford material and reality to our ethical observations any more than it will to our previous observations, nothing will be less necessary than for us to take refuge in negative concepts devoid of content, and then somehow to make even ourselves believe that we were saying something when we spoke with raised eyebrows about the “absolute,” the “infinite,” the “supersensuous,” and whatever other mere negations of the sort there may be (οὐδέν ἐστι, ἢ τὸ τῆς στερήσεως ὄνομα, μετὰ ἀμυδρᾶς ἐπινoίας. Nihil est, nisi negationis nomen, cum obscura notione. Julian, Oratio 5.)133 Instead of this, we could call it more briefly cloud-cuckoo-land (νεϕελoϰoϰϰυγία).134 We shall not need to serve up covered, empty dishes of this sort. Finally, no more here than in the previous books shall we relate histories and give them out as philosophy. For we are of opinion that anyone who imagines that the inner nature of the world can be historically comprehended, however finely glossed over it may be, is still infinitely far from a philosophical knowledge of the world. But this is the case as soon as a becoming, or a having-become, or a will-become enters into his view of the inner nature of the world; whenever an earlier or a later has the least significance; and consequently whenever points of beginning and of ending in the world, together with a path between the two, are sought and found, and the philosophizing individual even recognizes his own position on this path. Such historical philosophizing in most cases furnishes a cosmogony admitting of many varieties, or else a system of emanations, a doctrine of diminutions, or finally, when driven in despair over the fruitless attempts of those paths to the last path, it furnishes, conversely, a doctrine of a constant becoming, springing up, arising, coming to light out of darkness, out of the obscure ground, primary ground, groundlessness, or some other drivel of this kind. But all this is most briefly disposed of by remarking that a whole eternity, in other words an endless time, has already elapsed up to the present moment, and therefore everything that can or should become must have become already. For all such historical philosophy, whatever airs it may assume, regards time, just as though Kant had never existed, as a determination of things-in-themselves, and therefore stops at what Kant calls the phenomenon in opposition to the thing-in-itself, and what Plato calls the becoming never the being in opposition to the being never the becoming, or finally what is called by the Indians the web of Maya. It is just the knowledge belonging to the principle of sufficient reason, with which we never reach the inner nature of things, but endlessly pursue phenomena only, moving without end or aim like a squirrel in its wheel, until in the end we are tired out, and stop still at some arbitrarily chosen point, and then wish to extort respect for this from others as well. The genuine method of considering the world philosophically, in other words, that consideration which acquaints us with the inner nature of the world and thus takes us beyond the phenomenon, is precisely the method that does not ask about the whence, whither, and why of the world, but always and everywhere about the what alone. Thus it is the method that considers things not according to any relation, not as becoming and passing away, in short not according to one of the four forms of the principle of sufficient reason. On the contrary, it is precisely what is still left over after we eliminate the whole of this method of consideration that follows the principle of sufficient reason; thus it is the inner nature of the world, always appearing the same in all relations, but itself never amenable to them, in other words the Ideas of the world, that forms the object of our method of philosophy. From such knowledge we get philosophy as well as art; in fact, we shall find in this book that we can also reach that disposition of mind which alone leads to true holiness and to salvation from the world.