Christine M. Korsgaard is Arthur Kingsley Porter Professor of Philosophy at Harvard University. She is the author of Self-Constitution: Agency, Identity, and Integrity (2010), The Constitution of Agency (2009), The Sources of Normativity (Cambridge, 1996) and Creating the Kingdom of Ends (Cambridge, 1996). Jens Timmermann is Reader in Moral Philosophy at the University of St Andrews. He is the author of Kant's Groundwork of the Metaphysics of Morals: A Commentary (Cambridge, 2007) and Sittengesetz und Freiheit (2003). He is the editor of Kant's Critique of Practical Reason: A Critical Guide (with Andrews Reath, Cambridge, 2010) and of Kant's Groundwork of the Metaphysics of Morals: A Critical Guide (Cambridge, 2009).

"...Groundwork of the Metaphysics of Morals is an original, profound, and beautifully written piece." --George Lăzăroiu, PhD, Institute of Interdisciplinary Studies in Humanities and Social Sciences, New York, Contemporary Readings in Law and Social Justice

• Preface to the revised edition; Introduction; Chronology; Further reading; Groundwork of the Metaphysics of Morals; Preface; 1. Transition from common to philosophical moral rational cognition; 2. Transition from popular moral philosophy to the metaphysics of morals; 3. Transition from the metaphysics of morals to the critique of pure practical reason; Notes; Selected glossary; Index.