This volume discusses Kant's philosophical development in the Groundwork and his attempt to justify the categorical imperative as a principle of freedom.

Abbreviations; List of contributors; Introduction Jens Timmermann; 1. Ethics and anthropology in the development of Kant's moral philosophy Manfred Kuehn; 2. Happiness in the Groundwork Alison Hills; 3. Acting from duty: inclination, reason and moral worth Jens Timmermann; 4. Making the law visible: the role of examples in Kant's ethics Robert B. Louden; 5. The moral law as causal law Robert N. Johnson; 6. Dignity and the formula of humanity Oliver Sensen; 7. Kant's kingdom of ends: metaphysical, not political Katrin Flikschuh; 8. Kant against the 'spurious principles of morality' J. B. Schneewind; 9. Autonomy and impartiality: Groundwork III John Skorupski; 10. Problems with freedom: Kant's argument in Groundwork III and its subsequent emendation Paul Guyer; 11. Freedom and reason in Groundwork III Frederick Rauscher.