This is the first biography of an internationally famous pioneering development economist, Sir Hans Singer, who is better known throughout the developing world than any other economist. The author has known and worked with him for almost forty years. The biography gives a detailed account of Sir Hans Singer’s life and work and of the ‘twists of fate’ that led him to become a leading development economist. It contains a thematic synthesis of his major theoretical and conceptual work and of the many initiatives in which he has been involved to help solve the problems of developing countries.