The "Lost Generation" was the generation that came of age during World War I. Demographers William Strauss and Neil Howe outlined their Strauss–Howe generational theory using 1883–1900 as birth years for this generation. The term was coined by Gertrude Stein and popularized by Ernest Hemingway, who used it as one of two contrasting epigraphs for his novel, The Sun Also Rises. In that volume Hemingway credits the phrase to Gertrude Stein, who was then his mentor and patron. This generation included artists and writers who came of age during the war such as F. Scott Fitzgerald,T. S. Eliot, James Joyce, Olaf Stapledon, Sherwood Anderson, John Dos Passos, John Steinbeck, William Faulkner, Djuna Barnes, Glenway Wescott, Waldo Peirce, Isadora Duncan, Abraham Walkowitz, Ezra Pound, Alan Seeger, Henry Miller, Aldous Huxley, Malcolm Cowley, Louis-Ferdinand Céline, Erich Maria Remarque and the composers Sergei Prokofiev, Paul Hindemith, George Gershwin, and Aaron Copland.