Abstract
Owen Ware is already well-known among Kant scholars since he published several insightful contributions on Kant’s practical philosophy. Ware has now collected five of his essays on Kant’s practical philosophy in a book. Kant’s Justification of Ethics, OUP 2021, largely refers back to some of his previously published papers. The guiding idea of the book, and a crucial feature of Ware’s approach, is the claim that Kant’s ethics and metaphysics form a unit and that the central questions of Kant’s moral philosophy have to be analyzed against this methodological background. With this assertion he opposes what he believes has been an observable research trend for a long time.