In 1974, Robert Nozick's book Anarchy, State, and Utopia moved libertarianism from a relatively neglected subset of political philosophy to the center of the discipline, as one of the most cogent critiques of social democracy and egalitarian liberalism.Nozick developed a rights-based account of libertarianism to show that a minimal state can legitimately arise, that nothing more than a minimal state is justified, and that the minimal state is not only morally right, but can also be an inspiring 'meta-utopia'. This volume presents Nozick's contributions to political philosophy in the context of his work in analytical philosophy. It also provides a biography of Nozick and considers the initial reception and long-term influence of his work.