As the stock market crash of 1929 plunged the world into turmoil, two men emerged with competing claims on how to restore balance to economies gone awry. John Maynard Keynes, the mercurial Cambridge economist, believed that government had a duty to spend when others would not. He met his...

Friedrich Hayek was awarded the 1974 Nobel Prize for Economic Sciences for his contributions to the analysis of money and the business cycle, and for his penetrating analysis of the interdependence of economic, social and institutional phenomena. Hayek was a polymath: he systematically analyzed...