Journalist and author Nicholas Wapshott talks about his book Samuelson Friedman with EconTalk host Russ Roberts. Milton Friedman and Paul Samuelson were two of the most influential economists of the last century. They competed for professional acclaim and had very different policy visions. The conversation includes their differences over the work of Keynes, their rivalry in their columns at Newsweek, and a discussion of their intellectual and policy legacies.