Consent is a basic component of the ethics of human relations, making permissible a wide range of conduct that would otherwise be wrongful. Consent marks the difference between slavery and employment, permissible sexual relations and rape, borrowing or selling and theft, medical treatment and battery, participation in research and being a human guinea pig. This book assembles the contributions of a distinguished group of scholars concerning the ethics of consent in theory and practice. Part One addresses theoretical perspectives on the nature and moral force of consent, and its relationship to key ethical concepts, such as automy and paternalism. Part Two examines consent in a broad range of contexts, including sexual relations, contracts, selling organs, political legitimacy, medicine, and research.