This book examines the controversial and repercussive contention that an objective of the law should be to promote personal morality - to make people ethically better. It surveys a number of domains, including criminal law, tort law, contract law, family law, and medical law (particularly the realm of moral enhancement technologies) asking for each: (a) Does the existing law seek to promote personal morality? (b) If so, what is the account of morality promoted, and what is th