Immanuel Kant's final publication in ethics was The Doctrine of Virtue, Part II of the 1797 The Metaphysics of Morals. This text presents Kant's normative ethical theory. This guide is meant to be read alongside Kant's text, combining accessible explanations and novel interpretations of this difficult text. It is the first book in English devoted to The Doctrine of Virtue, one of Kant's most significant works.