The Philosophy of Law

The book that introduced the categorical imperative and made duty, not consequence, the test of a good act. Short enough to read in a sitting and still the standard entry point to Kantian ethics.

Immanuel Kant

Kant builds morality out of reason alone, with no appeal to feeling, reward, or religion. The second Critique, and his fullest defense of why free will and moral law belong together.

Immanuel Kant

The virtue half of the Metaphysics of Morals, where Kant works out what duty actually demands day to day. Covers duties to yourself and to others, from self-respect to friendship.

Immanuel Kant