Idea vs thing-in-itself

Idea and thing-in-itself are not entirely one and the same.

This is 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, itself the will—the will as not yet objectified, not yet become idea. For the thing-in-itself must, even according to Kant, be free from all the forms connected with knowing as such; and it is merely an error on his part (as is shown in the Appendix) that he did not count among these forms, before all others, that of being object for a subject, for it is the first and most universal form of all phenomena, i.e., of all idea; he should therefore have distinctly denied objective existence to his thing-in-itself, which would have saved him from a great inconsistency that was soon discovered. The Platonic Idea, on the other hand, is necessarily object, something known, an idea, and in that respect is different from the thing-in-itself, but in that respect only. It has merely laid aside the subordinate forms of the phenomenon, all of which we include in the principle of sufficient reason, or rather it has not yet assumed them; but it has retained the first and most universal form, that of the idea in general, the form of being object for a subject. It is the forms which are subordinate to this (whose general expression is the principle of sufficient reason) that multiply the Idea in particular transitory individuals, whose number is a matter of complete indifference to the Idea.

The principle of sufficient reason is thus again the form into which the Idea enters when it appears in the knowledge of the subject as individual. The particular thing that manifests itself in

accordance with the principle of sufficient reason is thus only an indirect objectification of the thing-in-itself (which is the will), for between it and the thing-in-itself stands the Idea as the only direct objectivity of the will, because it has assumed none of the special forms of knowledge as such, except that of the idea in general, i.e., the form of being object for a subject. Therefore it alone is the most adequate objectivity of the will or thing-in- itself which is possible; indeed it is the whole thing-in-itself, only under the form of the idea; and here lies the ground of the great agreement between Plato and Kant, although, in strict accuracy, that of which they speak is not the same. But the particular things are no really adequate objectivity of the will, for in them it is obscured by those forms whose general expression is the principle of sufficient reason, but which are conditions of the knowledge which belongs to the individual as such. If it is allowable to draw conclusions from an impossible presupposition, we would, in fact, no longer know particular things, nor events, nor change, nor multiplicity, but would comprehend only Ideas,—only the grades of the objectification of that one will, of the thing-in-itself, in pure unclouded knowledge. Consequently our world would be a nunc stans, if it were not that, as knowing subjects, we are also individuals, i.e., our perceptions come to us through the medium of a body, from the affections of which they proceed, and which is itself only concrete willing, objectivity of the will, and thus is an object among objects, and as such comes into the knowing consciousness in the only way in which an object can, through [228] the forms of the principle of sufficient reason, and consequently already presupposes, and therefore brings in, time, and all other forms which that principle expresses. Time is only the broken and piecemeal view which the individual being has of the Ideas, which are outside time, and consequently eternal. Therefore Plato says time is the moving picture of eternity: ±π…Ωø¬ μπ∫…Ω 236 The World As Will And Idea (Vol. 1 of 3)