This biography of Sir Hans W. Singer gives a detailed account of the way in which the "twists of fate" led him to becoming a leading development economist. It contains a thematic synthesis of all his major theoretical and conceptual work and of the many initiatives in which he has been involved to solve the problems of developing countries. The book documents the record of Hans Singer's achievements, with attention to his writings and intellectual contributions over the whole of his life - from his early training at the feet of Schumpter and Keynes, his pioneering work in the early years of the United Nations, to the final phase of his career at the Institute of Development at the University of Sussex. It also gives a list of all Singer's 450 publications in chronological order.