The picture which holds traditional philosophy captive is that of the mind as a great mirror, containing various representations-some accurate, some not-and capable of being studied by pure, nonempirical methods.
Without the notion of the mind as mirror, the notion of knowledge as accuracy of representation would not have suggested itself. Without this latter notion, the strategy common to Descartes and Kant-getting more accurate representations by inspecting, repairing, and polishing the mirror, so to speak-would not have made sense.

Philosophy and the Mirror of Nature, Introduction