Over the course of an extended career, Gunnar Myrdal - a Nobel Memorial Prize Laureate in Economics in 1974 - made brilliantly original contributions to monetary theory and policy and to the methodology of economics and social science. This study examines the manner in which his intellectual style left an impact on the shaping of Sweden's welfare state, on race relations in the United States, on post-World War Two economic cooperation in Europe, and on the analysis of Third World economic development.