History
Poetry as an art form may predate literacy. Many ancient works, from the Vedas (1700–1200 BC) to the Odyssey (800–675 BC), appear to have been composed in poetic form to aid memorization and oral transmission, in prehistoric and ancient societies. Poetry appears among the earliest records of most literate cultures, with poetic fragments found on early monoliths, runestones and stelae.The oldest surviving poem is the Epic of Gilgamesh, from the 3rd millennium BC in Sumer (in Mesopotamia, now Iraq), which was written in cuneiform script on clay tablets and, later, papyrus. Other ancient epic poetry includes the Greek epics, Iliad and Odyssey, and the Indian epics, Ramayana and Mahabharata.
The efforts of ancient thinkers to determine what makes poetry distinctive as a form, and what distinguishes good poetry from bad, resulted in "poetics" — the study of the aesthetics of poetry. Some ancient societies, such as the Chinese through the Shi Jing, one of the Five Classics of Confucianism, developed canons of poetic works that had ritual as well as aesthetic importance. More recently, thinkers have struggled to find a definition that could encompass formal differences as great as those between Chaucer's Canterbury Tales and Matsuo Basho-'s Oku no Hosomichi, as well as differences in context spanning Tanakh religious poetry, love poetry, and rap.
Context can be critical to poetics and to the development of poetic genres and forms. Poetry that records historic events in epics, such as Gilgamesh or Ferdowsi's Shahnameh, will necessarily be lengthy and narrative, while poetry used for liturgical purposes (hymns, psalms, suras and hadiths) is likely to have an inspirational tone, whereas elegy and tragedy are meant to evoke deep emotional responses. Other contexts include Gregorian chants, formal or diplomatic speech, political rhetoric and invective, light-hearted nursery and nonsense rhymes, and even medical texts.
The Polish historian of aesthetics, Wladyslaw Tatarkiewicz, in a paper on "The Concept of Poetry," traces the evolution of what is in fact two concepts of poetry. Tatarkiewicz points out that the term is applied to two distinct things that, as the poet Paul Valéry observes, "at a certain point find union. Poetry [...] is an art based on language. But poetry also has a more general meaning [...] that is difficult to define because it is less determinate: poetry expresses a certain state of mind." ."