This book contains essays by A. John Simmons, perhaps the most innovative and creative of today's political philosophers.

Introduction; 1. The principle of fair play; 2. Fair play and political obligation: twenty years later; 3. The obligations of citizens and the justification of conscription; 4. Associative political obligations; 5. External justifications and institutional roles; 6. Philosophical anarchism; 7. Justification and legitimacy; 8. 'Denisons' and 'Aliens': Locke's problem of political consent; 9. Human rights and world citizenship: the universality of Human Rights in Kant and Locke; 10. Original-acquisition justifications of private property; 11. Historical rights and fair shares; 12. Makers' rights.