Robert Penn Warren was a poet, writer, and critic, best known for his Pulitzer Prize-winning novel, All the King’s Men. After study at Oxford as a Rhodes scholar and Guggenheim Fellow, he began a distinguished career as a teacher and critic at several universities, notably Yale and Louisiana State in Baton Rouge. A prolific writer, he penned many novels and collections of poetry, including Promises and Now and Then, both of which won the Pulitzer Prize for Poetry. Warren is the only person to have won the Pulitzer in both poetry and fiction. His poetry collection, Promises, also won the National Book Award for Poetry.