Marcus Willaschek’s new book Kant on the Sources of Metaphysics: The Dialectic of Pure Reason (Cambridge University Press, 2018) is a penetrating analysis of the Transcendental Dialectic of Kant’s Critique of Pure Reason. In his comments, the author first raises some questions concerning the structure of the Transcendental Dialectic (and Willaschek’s reconstruction of it) and then proposes that looking at the second Critique and continuing on into the third Critique will reveal more roles for the idea of God in Kant’s reconstruction of traditional metaphysics than Willaschek’s treatment suggests.