John Maynard Keynes (1883-1946) has justifiably been called the most influential economist of the twentieth century. His behind the scenes account of what went on Paris in 1919 also marked him out as one of the greatest masters of the polemical form in the English language. A renaissance man who was just as much at home in the world of art and ballet as he was discussing probability theory and the history of economic thought, Keynes left an indelible mark on the world through his work as an economist, journalist, sponsor of the arts, and policy-maker in two wars. Michael Cox is Director of LSE IDEAS and Professor Emeritus of International Relations at the London School of Economics. Over a long and distinguished career he has published work on the former USSR, the Cold War, US foreign policy and more recently on the reshaping of world order in the 21st century. His work on E.H.Carr and Carr's The Twenty Years' Crisis has only confirmed his reputation as a scholar of international standing. He is currently working on a history of the London School of Economics entitled: The School: The LSE and the Shaping of the Modern World.