This book provides an insightful and original perspective on the work and legacy of John Maynard Keynes. It explores his work as an economist, world system planner, and social philosopher to highlight the different ways he influenced economics, economic policy, and the global political economy. Particularly attention is given to the development of the ideas which led up to The General Theory, his role as a planner and negotiator within international organizations, his work on the development of the post-war UK system, his debates with British Economists. This book examines the work and international legacy of one of economics’ defining thinkers. It will be of interest to students and researchers interested in the political economy and the history of economic thought.