From John Maynard Keynes's foremost biographer, an illuminating look at how the economist's ethical approach can be used to address today's pressing problems. John Maynard Keynes (1883–1946) was arguably the most important economist of the twentieth century; his ideas have fundamentally altered the way governments approach economic policy. Exploring the enduring relevance of his ideas, Robert Skidelsky emphasizes Keynes's conception of economics as a moral science. Keynes was deeply invested in the broader societal implications of economic policies, and this book highlights his belief in economics as a tool for achieving the good life. Skidelsky sheds new light on Keynes's views on capitalism, discusses his advocacy of low interest rates, and delves into his thoughts on economic instability. He also offers fresh insight into Keynes's ideas about money, his philosophical foundations, and his unique approach to uncertainty and probability. Ultimately, Skidelsky shows how Keynes's vision of an economic policy that prioritizes the common good can be adapted to help solve our current economic and political challenges.