This volume is the first-ever English translation of Kant's last major work, the so-called Opus postumum, a work Kant himself described as his "chef d'oeuvre" and as the keystone of his entire philosophical system.

This volume contains four versions of the lecture notes taken by Kant's students of his university courses in ethics given regularly over a period of some thirty years. The notes are very complete and expound not only Kant's views on ethics but many of his opinions on life and human nature. Much of this material has never before been translated into English. As with other volumes in the series, there are copious linguistic and explanatory notes and a glossary of key terms.