Sir William Arthur Lewis (23 January 1915 – 15 June 1991) was a Saint Lucian economist well known for his contributions in the field of economic development. In 1979 he won the Nobel Memorial Prize in Economics. After gaining his Bachelor of Science degree in 1937 and a Ph.D. degree in 1940 at the London School of Economics (LSE), Lewis worked as a member of the staff at the LSE until 1948. During this period, he developed some of his most important concepts about the patterns of capital and wages in developing countries. He particularly became known for his contributions to development economics, of great interest as former colonies began to gain independence from European nations.Lewis worked at Princeton for the next two decades, teaching generations of students until his retirement in 1983. In 1970 Lewis also was selected as the first president of the Caribbean Development Bank, serving in that capacity until 1973. Lewis received the Nobel prize in Economics in 1979, sharing it with Theodore Schultz.

Source: https://en.wikipedia.org/wiki/W._Arthur_Lewis