Richard Feynman, in full Richard Phillips Feynman, (born May 11, 1918, New York, New York, U.S.—died February 15, 1988, Los Angeles, California), American theoretical physicist who was widely regarded as the most brilliant, influential, and iconoclastic figure in his field in the post-World War II era. To know about his life say your Google Assistant "Talk to Richard Feynman's Life ".