Who was John Keynes?

John Keynes was a British economist, renowned for his influential theories on how to manage economies, particularly during times of economic downturns. He is best known for his advocacy of government intervention in the economy to stimulate demand and support recovery, especially articulated in his seminal work, "The General Theory of Employment, Interest, and Money." Keynesian economics emphasizes the role of aggregate demand in influencing economic output and employment levels, breaking away from classical economic theories that largely favored laissez-faire approaches. His ideas laid the foundation for modern macroeconomic thought and significantly shaped economic policies during the 20th century, making him one of the most significant economists of his time.