The book presents a reconstruction of the development of Kant’s ethical thought from the 1760s till the "Metaphysics of Morals" of 1797 with a focus on the evolution of Kant’s overall project in practical philosophy. The main steps in the development of his practical philosophy are interpreted as successive attempts to connect normative ethics with an innovative preliminary descriptive inquiry. The book reconstructs the different ways in which Kant focuses this plan, stressing both the unity and the breaks in Kant’s (...) development. I thus distinguish three main phases, characterised by a different systematic project. The first part is devoted to Kant’s work on moral theory up to 1769. The second part examines Kant’s new ethical project from 1770 to 1785, while the third part considers the further developments from the second "Critique" to the "Metaphysics of Morals". (shrink)