More at http://philosophytalk.org/shows/john-rawls.

John Rawls was one of the most influential political philosophers of the twentieth century. In his book "A Theory of Justice" he articulated a concept of justice as fairness, which won many fans among liberals, and provoked important responses from thoughtful libertarians such as Robert Nozick. Ken and John explore Rawls' ideas with one of his students, Joshua Cohen from UC Berkeley (formerly of Stanford University).