This timely and important book is the first serious work of philosophy to address the question: Do adults have a moral right to use drugs for recreational purposes? Many critics of the "war on drugs" denounce law enforcement as counterproductive and ineffective. Douglas Husak argues that the "war on drugs" violates the moral rights of adults who want to use drugs for pleasure, and that criminal laws against such use are incompatible with moral rights. This is not a polemical tract but a scrupulously argued work of philosophy that takes full account of all available data concerning drug use in the United States today. The author is careful to describe the properties a recreational drug would have to possess before the state would be justified in prohibiting it. Since criminal laws against the use of recreational drugs are justified neither by the harm users cause to themselves nor by the harm users cause to each other, Professor Husak concludes that such laws are, in almost all cases, unjustified. This book will be of particular interest to philosophers in applied ethics and philosophers of law, but it will prove provocative reading for anyone with a serious concern in the issue of drug use and drug control.