A poet is a person who studies and creates poetry. Poets may describe themselves as such or be described as such by others. A poet may simply be the creator (thinker, songwriter, writer, or author) who creates (composes) poems (oral or written), or they may also perform their art to an audience. The work of a poet is essentially one of communication, expressing ideas either in a literal sense (such as communicating about a specific event or place) or metaphorically. Poets have existed since prehistory, in nearly all languages, and have produced works that vary greatly in different cultures and periods. Throughout each civilization and language, poets have used various styles that have changed over time, resulting in countless poets as diverse as the literature that (since the advent of writing systems) they have produced. In Ancient Rome, professional poets were generally sponsored by patrons, wealthy supporters including nobility and military officials.Barbara K. Gold (2014), Literary and Artistic Patronage in Ancient Rome", University of Texas Press. For instance, Gaius Cilnius Maecenas, friend to Caesar Augustus, was an important patron for the Augustan poets, including both Horace and Virgil. While Ovid, a well established poet, was banished from Rome by the first Augustus. Poets held an important position in pre-Islamic Arabic society with the poet or sha'ir filling the role of historian, soothsayer and propagandist. Words in praise of the tribe (qit'ah) and lampoons denigrating other tribes (hija') seem to have been some of the most popular forms of early poetry. The sha'ir represented an individual tribe's prestige and importance in the Arabian peninsula, and mock battles in poetry or zajal would stand in lieu of real wars. 'Ukaz, a market town not far from Mecca, would play host to a regular poetry festival where the craft of the sha'irs would be exhibited. In the High Middle Ages, troubadors were an important class of poets and came from a variety of backgrounds.