Kant’s Groundwork and second Critique advanced a radically new conception of morality. The early post-Kantians attempted to develop and, in some cases, challenge the key claims of Kant’s account of morality. Among the questions they attempted to answer were: Can an alternative deduction of the categorical imperative be provided? What role, if any, do custom and tradition play in determining our moral obligations? What role do “drives” play in a Kantian conception of morality? Can Kantian ethics provide an adequate account of human freedom? This workshop will look at the answers to such questions, and consider whether they might inform and deepen our understanding of Kant’s moral philosophy.