Robert Nozick's Anarchy, State and Utopia is one of the works which dominates contemporary debate in political philosophy. Drawing on traditional assumptions associated with individualism and libertarianism, Nozick mounts a powerful argument for a minimal `nightwatchman' state and challenges the views of many contemporary philosophers, most notably John Rawls. Jonathan Wolff's new book is the first full-length study of Nozick's work and of the debates to which it has given rise. He situates...