He was earlier noted for The Story of Philosophy, written in 1926, described as "a groundbreaking work that helped to popularize philosophy". He sought to unify and humanize the great body of historical knowledge, which had grown voluminous and become fragmented into esoteric specialties, and to vitalize it for contemporary application. Will and Ariel Durant were awarded the Pulitzer Prize for General Non-Fiction in 1968 and the Presidential Medal of Freedom in 1977.