John Maynard Keynes

John Maynard Keynes was a highly influential English economist.

He is often called the "father of macroeconomics." This means he studied the behavior of entire economies rather than just single markets. His theories changed how governments manage their money and resources. These ideas became the foundation for a school of thought known as Keynesian economics. Today, many of his concepts are part of mainstream macroeconomics. His work is often categorized under New Keynesianism.

Keynes developed a specific way to look at economic activity. He focused on a concept called aggregate demand. This term refers to the total amount of spending in an economy. Keynes argued that this level of spending determines how much economic activity occurs. If aggregate demand is too low, the economy can suffer. This can lead to long periods of high unemployment. He noted that wages and labor costs are often "rigid downwards." This means they do not drop quickly enough to fix economic problems automatically. Because of this, he believed the economy would not always fix itself.

To solve these problems, Keynes suggested using specific government tools. He advocated for the use of fiscal and monetary policies. Fiscal policy involves how a government spends money or collects taxes. Monetary policy involves managing the supply of money. He believed these tools could lessen the bad effects of recessions and depressions.

He also moved away from the idea of free trade. He criticized the Ricardian comparative advantage theory. This theory was a major pillar of neoclassical economics. Keynes believed its initial assumptions were not realistic. Instead, he became a supporter of protectionism.

Keynes had a very strong start in his education.

He was born in Cambridge, England, on June 5, 1883. His father, John Neville Keynes, was an economist at Cambridge. His mother, Florence Ada Keynes, was a social reformer and a mayor. Keynes showed a talent for math at a very young age. He attended Eton College on a King's Scholarship. In 1901, he won the Tomline Prize for mathematics at Eton. He then went to King's College, Cambridge. He graduated with a first-class B.A. in mathematics in 1904. Although he studied math, he was also very interested in philosophy.

His professional career involved many different roles.

In 1906, he began working as a clerk in the India Office. He later became a fellow of King's College in 1909. He also served as the editor of The Economic Journal. During the First World War, the British government used his expertise. He worked at the Treasury starting in 1915. He managed credit between Britain and its allies. He even managed to acquire a supply of Spanish pesetas to help the government. In 1919, he served as a financial representative at the Versailles peace conference.

Keynes's influence has risen and fallen at different times. By the late 1930s, many Western economies used his ideas. Almost all capitalist governments adopted his policies within twenty years of his death in 1946. However, his influence began to fade in the 1970s. This was partly due to stagflation in Britain and the United States. During this time, economists like Milton Friedman and other monetarists criticized his views. They disputed if governments could successfully regulate the business cycle with fiscal policy.

Keynesian ideas saw a major resurgence during the 2008 financial crisis. His theories provided the basis for policies used by many world leaders. For example, President Barack Obama and Prime Minister Gordon Brown used these ideas. Time magazine named him one of the Most Important People of the Century in 1999. They noted that his radical ideas may have saved capitalism. Beyond economics, Keynes was a member of the Bloomsbury Group of intellectuals. He was also a director of the Bank of England. He remains one of the most famous economists of the 20th century.