 Kant’s was apoplectic that Feder and Garve had, apparently, not made any serious attempt to even understand the Critique, or to present its contents accurately to their readers. He penned a response to the review, published as an appendix to the Prolegomena. In the appendix, and in the text of the Prolegomena itself, Kant explains what he sees as clear differences between his own view and Berkeley’s. First, Kant identifies idealism as the doctrine that