This book consists of two parts: the essay "The Idea of Public Reason Revisited" and "The Law of Peoples", a major reworking of a much shorter article by the same name. Taken together, they are the culmination of more than 50 years of reflection on liberalism and on some of the most pressing problems of our times.

"The Idea of Public Reason Revisited" is John Rawls' most detailed account of how a modern constitutional democracy, based on a liberal political conception, could and would be viewed as legitimate by reasonable citizens who, on religious, philosophical, or moral grounds, do not themselves accept a liberal comprehensive doctrine.

The Law of Peoples lays out the general principles that can and should be accepted by both liberal and non-liberal societies as the standard for regulating their behavior toward one another. The print book is published by Harvard University Press.