Robert Penn Warren was an American poet, novelist, and literary critic, and was one of the founders of New Criticism. He was also a charter member of the Fellowship of Southern Writers. He is the only person to have won Pulitzer Prizes for both fiction and poetry. He won the Pulitzer in 1947 for his novel All the King's Men (1946) and won his subsequent Pulitzers for poetry in 1957 and then in 1979.