6. Arthur Schopenhauer

Schopenhauer describes the change brought about in his mind by these thoughts as a spiritual rebirth. They fill him with all the greater satisfaction as he finds them in full agreement with the views of the other philosopher to whom Schulze had pointed him, those of Plato. The latter says: "As long as we relate to the world merely perceptively, we are like people who sit in a dark cave so tightly bound that they cannot turn their heads, and see nothing but by the light of a fire burning behind them, on the wall opposite them, the shadowy images of real things passing between them and the fire, and indeed of each other, and each of themselves only the shadows. Just as these shadows relate to the real things, so our objects of perception, according to Plato's conviction, relate to the Ideas, which are the objects of perception. The objects of perception arise and pass away, the ideas are eternal. Schopenhauer found the same view in Kant as in Plato: that the visible world has no true being. Schopenhauer soon regarded this as an incontrovertible, indeed as the first and most universal truth. For him it took the following form: I gain knowledge of things insofar as I see them, hear them, feel them, etc., in a word: insofar as I imagine them. An object becomes my object of knowledge means: it becomes my imagination. Heaven, earth, etc., are therefore my conceptions, for the thing in itself that corresponds to them has become my object only because it has assumed the character of conception. Schopenhauer took from the thought worlds of Kant and Plato the germ of those parts of his philosophical system in which he treats the world as imagination.