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Arthur Cecil Pigou

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Arthur Cecil Pigou was a famous English economist who changed how we think about society.

He lived from 1877 until 1959. Most of his life was spent at the University of Cambridge. He was a teacher and a builder of the School of Economics there. Many of his students went on to teach economics all over the world. He helped create a strong foundation for how people study money and trade. His work helped many people understand how individual choices affect everyone else.

One of his biggest ideas was something called an externality.

An externality is a cost or a benefit that affects people who did not make the original choice. For example, a factory might cause pollution that harms a neighbor. Pigou argued that these problems could be fixed with a special tax. This is now called a Pigovian tax. He also thought that good things, like positive benefits, could be helped with a subsidy. A subsidy is when the government gives money to help a good activity happen.

Pigou's journey into economics began through his study of philosophy and ethics.

He first studied history at King's College in Cambridge in 1896. He later studied economics under a famous teacher named Alfred Marshall. Pigou eventually became a professor of political economy in 1908. He held this important job at Cambridge until 1943. During his time, he wrote many important books and essays. His most famous book was titled The Economics of Welfare, published in 1920.

He also spent a lot of time studying why people might not have jobs.

In 1933, he published a book called The Theory of Unemployment. He looked at things like "sticky wages," where pay does not change quickly. He also noticed that some people were unemployed because employers did not have enough demand for labor. This was a big topic after World War One. Pigou even gave financial support to a young economist named John Maynard Keynes. Even though they sometimes disagreed, they were very good friends.

Today, Pigou's ideas are still very important for our world.

His work on externalities is used in environmental economics to help fight climate change. There is even a group called the Pigou Club that supports carbon taxes. Outside of his math and money studies, Pigou was a person with many hobbies. He loved the outdoors and was a very talented mountain climber. He lived a full life of learning and helping others understand the world.

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