The World as Will and Idea. Arthur Schopenhauer
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they have only a relative being; they all exist merely in and through their relations to each other; their whole being may, therefore, quite as well be called a non-being. They are consequently not objects of a true knowledge (επιστημη), for such a knowledge can only be of what exists for itself, and always in the same way; they, on the contrary, are only the objects of an opinion based on sensation (δοξα μετ᾽ αισθησεως αλογου). So long as we are confined to the perception of these, we are like men who sit in a dark cave, bound so fast that they cannot turn their heads, and who see nothing but the shadows of real things which pass between them and a fire burning behind them, the light of which casts the shadows on the wall opposite them; and even of themselves and of each other they see only the shadows on the wall. Their wisdom would thus consist in predicting the order of the shadows learned from experience. The real archetypes, on the other hand, to which these shadows correspond, the eternal Ideas, the original forms of all things, can alone be said to have true being (οντως ον), because they always are, but never become nor pass away. To them belongs no multiplicity; for each of them is according to its nature only one, for it is the archetype itself, of which all particular transitory things of the same kind which are named after it are copies or shadows. They have also no coming into being nor passing away, for they are truly being, never becoming nor vanishing, like their fleeting shadows. (It is necessarily presupposed, however, in these two negative definitions, that time, space, and causality have no significance or validity for these Ideas, and that they do not exist in them.) Of these only can there be true knowledge, for the object of such knowledge can only be that which always and in every respect (thus in-itself) is; not that which is and again is not, according as we look at it.” This is Plato's doctrine. It is clear, and requires no further proof that the inner meaning of both doctrines is entirely the same; that both explain the visible world as a manifestation, which in itself is nothing, and which only has meaning and a borrowed reality through that which expresses itself in it (in the one case the thing-in-itself, in the other the Idea). To this last, which has true being, all the forms of that phenomenal existence, even the most universal and essential, are, according to both doctrines, entirely foreign. In order to disown these forms Kant has directly expressed them even in abstract terms, and distinctly refused time, space, and causality as mere forms of the phenomenon to the thing-in-itself. Plato, on the other hand, did not attain to the fullest expression, and has only distinctly refused these forms to his Ideas in that he denies of the Ideas what is only possible through these forms, multiplicity of similar things, coming into being and passing away. Though it is perhaps superfluous, I should like to illustrate this remarkable and important agreement by an example. There stands before us, let us suppose, an animal in the full activity of life. Plato would say, “This animal has no true existence, but merely an apparent existence, a constant becoming, a relative existence which may just as well be called non-being as being. Only the Idea which expresses itself in that animal is truly ‘being,’ or the animal in-itself (αυτο το θηριον), which is dependent upon nothing, but is in and for itself (καθ᾽ ἑαυτο, αει ὡς αυτως); it has not become, it will not end, but always is in the same way (αει ον, και μηδεποτε ουτε γυγνομενον ουτε απολλυμενον). If now we recognise its Idea in this animal, it is all one and of no importance whether we have this animal now before us or its progenitor of a thousand years ago, whether it is here or in a distant land, whether it presents itself in this or that manner, position, or action; whether, lastly, it is this or any other individual of the same species; all this is nothing, and only concerns the phenomenon; the Idea of the animal alone has true being, and is the object of real knowledge.” So Plato; Kant would say something of this kind, “This animal is a phenomenon in time, space, and causality, which are collectively the conditions a priori of the possibility of experience, lying in our faculty of knowledge, not determinations of the thing-in-itself. Therefore this animal as we perceive it at this definite point of time, in this particular place, as an individual in the connection of experience (i.e., in the chain of causes and effects), which has come into being, and will just as necessarily pass away, is not a thing-in-itself, but a phenomenon which only exists in relation to our knowledge. To know it as what it may be in itself, that is to say, independent of all the determinations which lie in time, space, and causality, would demand another kind of knowledge than that which is possible for us through the senses and the understanding.”
In order to bring Kant's mode of expression nearer the Platonic, we might say: Time, space, and causality are that arrangement of our intellect by virtue of which the one being of each kind which alone really is, manifests itself to us as a multiplicity of similar beings, constantly appearing and disappearing in endless succession. The apprehension of things by means of and in accordance with this arrangement is immanent knowledge; that, on the other hand, which is conscious of the true state of the case, is transcendental knowledge. The latter is obtained in abstracto through the criticism of pure reason, but in exceptional cases it may also appear intuitively. This last is an addition of my own, which I am endeavouring in this Third Book to explain.
If the doctrine of Kant had ever been properly understood and grasped, and since Kant's time that of Plato, if men had truly and earnestly reflected on the inner meaning and content of the teaching of these two great masters, instead of involving themselves in the technicalities of the one and writing parodies of the style of the other, they could not have failed to discern long ago to what an extent these two great philosophers agree, and that the true meaning, the aim of both systems, is the same. Not only would they have refrained from constantly comparing Plato to Leibnitz, on whom his spirit certainly did not rest, or indeed to a well-known gentleman who is still alive,44 as if they wanted to mock the manes of the great thinker of the past; but they would have advanced much farther in general, or rather they would not have fallen so disgracefully far behind as they have in the last forty years. They would not have let themselves be led by the nose, to-day by one vain boaster and to-morrow by another, nor would they have opened the nineteenth century, which promised so much in Germany, with the philosophical farces that were performed over the grave of Kant (as the ancients sometimes did at the funeral obsequies of their dead), and which deservedly called forth the derision of other nations, for such things least become the earnest and strait-laced German. But so small is the chosen public of true philosophers, that even students who understand are but scantily brought them by the centuries—Εισι δη ναρθηκοφοροι μεν πολλοι, βακχοι δε γε παυροι (Thyrsigeri quidem multi, Baachi vero pauci). Ἡ ατιμια φιλοσοφιᾳ δια ταυτα προσπεπτωκεν, ὁτι ου κατ αξιαν αυτης ἁπτονται; ου γαρ νοθους εδει ἁπτεσθαι, αλλα γνησιους (Eam ob rem philosophia in infamiam incidit, quad non pro dignitate ipsam attingunt: neque enim a spuriis, sad a legitimis erat attrectanda).—Plato.
Men followed the words—such words as “a priori ideas,” “forms of perception and thought existing in consciousness independently of experience,” “fundamental conceptions of the pure understanding,” &c., &c.—and asked whether Plato's Ideas, which were also original conceptions, and besides this were supposed to be reminiscences of a perception before life of the truly real things, were in some way the same as Kant's forms of perception and thought, which lie a priori in our consciousness. On account of some slight resemblance in the expression of these two entirely different doctrines, the Kantian doctrine of the forms which limit the knowledge of the individual to the phenomenon, and the Platonic doctrine of Ideas, the knowledge of which these very forms expressly deny, these so far diametrically opposed doctrines were carefully compared, and men deliberated and disputed as to whether they were identical, found at last that they were not the same, and concluded that Plato's doctrine of Ideas and Kant's “Critique of Reason” had nothing in common. But enough of this.45
§ 32. It follows from our consideration of the subject, that, for us, Idea and thing-in-itself are not entirely one and the same, in spite of the inner agreement between Kant and Plato, and the identity of the aim they had before them, or the conception of the world which roused them and led them to philosophise. The Idea is for us rather the direct, and therefore adequate, objectivity of the thing-in-itself, which is, however,