John Maynard Keynes Economist

• Gender: Male
• Citizenship: United Kingdom
• Born: Jun 5, 1883
• Died: Apr 21, 1946

John Maynard Keynes, 1st Baron Keynes, CB, FBA, was a British economist whose ideas have fundamentally affected the theory and practice of modern macroeconomics and informed the economic policies of governments. He built on and greatly refined earlier work on the causes of business cycles, and he is widely considered to be one of the founders of modern macroeconomics and the most influential economist of the 20th century. His ideas are the basis for the school of thought known as Keynesian economics and its various offshoots.

In the 1930s, Keynes spearheaded a revolution in economic thinking, overturning the older ideas of neoclassical economics that held that free markets would, in the short to medium term, automatically provide full employment, as long as workers were flexible in their wage demands. Keynes instead argued that aggregate demand determined the overall level of economic activity and that inadequate aggregate demand could lead to prolonged periods of high unemployment. According to Keynesian economics, state intervention was necessary to moderate "boom and bust" cycles of economic activity.