Natural Law Republicanism

Abstract

Abstract By any metric, Cicero’s works are some of the most widely read in the history of Western thought. This book suggests that perhaps Cicero’s most lasting and significant contribution to philosophy lies in helping to inspire the development of liberalism. Individual rights, the protection of private property, and political legitimacy based on the consent of the governed are often taken to be among early modern liberalism’s unique innovations and part of its rebellion against classical thought. However, this book demonstrates that Cicero’s thought played a central role in shaping and inspiring the liberal republican project. Cicero argued that liberty for individuals could arise only in a res publica in which the claims of the people to be sovereign were somehow united with a commitment to universal moral law, which limits what the people can rightfully do. Figures such as Hugo Grotius, John Locke, and John Adams sought to work through the tensions in Cicero’s vision, laying the groundwork for a theory of politics in which the freedom of the individual and the people’s collective right to rule were mediated by natural law. This book traces the development of this intellectual tradition from Cicero’s original articulation through the American founding. It concludes by exploring how modern political ideas remain dependent on the conception of just politics first elaborated by Rome’s great philosopher-statesman.