It has become standard to treat Kant'scharacterization of pure apperception as involving the claim that questions about what I think are transparent to questions about the world. By contrast, empirical apperception is thought to be non-transparent, since it involves a kind of inner observation of my mental states. I propose a reading that reverses this: pure apperception is non-transparent, because conscious only of itself, whereas empirical apperception is transparent to the world. The reading I offer, unlike the standard one, can accommodate Kant'sclaim that the I of pure apperception is the same as the I of empirical apperception.