T.S. Eliot (1888-1965) was a British-born American poet, playwright, and literary critic. He is widely regarded as one of the most influential poets of the 20th century, and his works, which include "The Waste Land" and "Four Quartets," are known for their innovative use of language and form. Eliot was also a prominent literary critic and played a major role in shaping the Modernist movement.