This book consists of two parts: "The Law of Peoples," a major reworking of a much shorter article by the same name published in 1993, and the essay "The Idea of Public Reason Revisited," first published in 1997. Taken together, they are the culmination of more than fifty years of reflection on liberalism and on some of the most pressing problems of our times by John Rawls. "The Law of Peoples" extends the idea of a social contract to the...