The fact of scarcity, which exists everywhere, guarantees that people will compete for resources. Markets are one way to organize and channel this competition. Politics is another. People use both markets and politics to get resources allocated to the ends they favor. Even in a democracy, however, political activity is startlingly different from voluntary exchange in markets.

People can accomplish many things in politics that they could not accomplish in the private sector. Some of these are vital to the broader community's welfare, such as control of health-threatening air pollution from myriad sources affecting millions of individuals or the provision of national defense. Other public-sector actions, such as subsidies to farmers and restrictions on the number of taxicabs in a city, provide narrow benefits that fall far short of their costs.... MORE

So influential was John Maynard Keynes in the middle third of the twentieth century that an entire school of modern thought bears his name. Many of his ideas were revolutionary; almost all were controversial. Keynesian economics serves as a sort of yardstick that can define virtually all economists who came after him.

Keynes was born in Cambridge and attended King's College, Cambridge, where he earned his degree in mathematics in 1905. He remained there for another year to study under Alfred Marshall and Arthur Pigou, whose scholarship on the quantity theory of money led to Keynes's Tract on Monetary Reform many years later. After leaving Cambridge, Keynes took a position with the civil service in Britain. While there, he collected the material for his first book in economics, Indian Currency and Finance, in which he described the workings of India's monetary system. He returned to Cambridge in 1908 as a lecturer, then took a leave of absence to work for the British Treasury. He worked his way up quickly through the bureaucracy and by 1919 was the Treasury's principal representative at the peace conference at Versailles. He resigned because he thought the Treaty of Versailles was overly burdensome for the Germans. MORE