This updated edition takes account of new materials and new scholarship on Keynes that have appeared since 1980. It analyzes Keynes' intellectual origins and characteristic modes of thought so as to put Keynes' contributions to economics and economic policy-making into perspective.The economist; glosses on Marshalliana 1908-25; the period of transition 1925-31; the years of the General theory 1931-37; the economist statesman 1938-46.