That is, however, a false idealism which thinks that the passivity and spontaneity of the mind depend on whether the determination given is from within or from without, as if there were freedom in sense-perception, whereas it is itself a sphere of limitation. It is one thing when the matter—whether it be sensation, light, colour, seeing or hearing—is apprehended from the Idea, for it is then shown that it comes to pass from the self-determination of the Idea. But it is different when, in so far as I exist as an individual subject, the Idea exists in me as this particular individual; there we have the standpoint of finitude established, and therefore of passivity. Thus there need be no standing on ceremony with sense-perception, nor can a system of idealism be based on the theory that nothing comes to us from without: as Fichte’s theory about himself was, that when he put on his coat, he constituted it in part by drawing it on, or even by looking at it. The individual element in sensation is the sphere of the individuality of consciousness; it is present therein in the form of one thing as much as of another, and its individuality consists in this fact, that other things exist for it. Aristotle continues: “Speaking generally, the difference is that potentiality is twofold; as we say a boy may become a general, and a grown man may also become so,” for the latter has the effective power. “This is the nature of the faculty of sense-perception (αἰσθητικόν); it is in potentiality what the object of sense (αἰσθητόν) is in actuality. Sense-perception is therefore passive, in so far as it does not resemble its object, but after the impression has been made it becomes similar to its object, and is identified with it.” The reaction of sense-perception consists therefore in this active receiving into itself of that which is perceived; but this is simply activity in passivity, the spontaneity which abrogates the receptivity in sense-perception. Sense-perception, as made like to itself, has, while appearing to be brought to pass by means of an influence working on it, brought to pass the identity of itself and its object. If then subjective idealism declares that there are no external things, that they are but a determination of our self, this must be admitted in respect to pure sense-perception, since sense-perception is a subjective existence or state in me, which yet, however, is not for that reason freedom.