Latin literature, the body of written works in the Latin language, remains an enduring legacy of the culture of ancient Rome. The Romans produced many works of poetry, comedy, tragedy, satire, history, and rhetoric, drawing heavily on the traditions of other cultures and particularly on the more matured literary tradition of Greece. Long after the Western Roman Empire had fallen, the Latin language continued to play a central role in western European civilization. Latin literature is conventionally divided into distinct periods. Few works remain of Early and Old Latin; among these few surviving works, however, are the plays of Plautus and Terence, which have remained very popular in all eras down to the present, while many other Latin works, including many by the most prominent authors of the Classical period, have disappeared, sometimes being re-discovered after centuries, sometimes not. Such lost works sometimes survive as fragments in other works which have survived, but others are known from references in such works as Pliny the Elder"s Naturalis Historia or the De Architectura of Vitruvius.