Paul Guyer is acknowledged as one of the world's foremost Kant specialists, and he collects here some of his most celebrated essays from the past decade and a half. The governing theme of the volume is the role of systematicity in Kant's theoretical and practical philosophy. Featuring two brand-new papers and an introduction to orient the reader, Kant's System of Nature and Freedom will be an essential purchase for anyone working on the history of philosophy and related areas of ethics, philosophy of science, and metaphysics.