Homer, the Iliad and the Odyssey, composed sometime between the 9th and 6th centuries BC. Each poem narrates only a part of the war. The Iliad covers a short period in the last year of the siege of Troy, while the Odyssey concerns Odysseus's return to his home island of Ithaca following the sack of Troy and contains several flashbacks to particular episodes in the war. Other parts of the Trojan War were told in the poems of the Epic Cycle, also known as the Cyclic Epics: the Cypria, Aethiopis, Little Iliad, Iliou Persis, Nostoi, and Telegony. Though these poems survive only in fragments, their content is known from a summary included in Proclus' Chrestomathy. The authorship of the Cyclic Epics is uncertain. It is generally thought that the poems were written down in the 7th and 6th century BC, after the composition of the Homeric poems, though it is widely believed that they were based on earlier traditions. Both the Homeric epics and the Epic Cycle take origin from oral tradition. Even after the composition of the Iliad, Odyssey, and the Cyclic Epics, the myths of the Trojan War were passed on orally in many genres of poetry and through non-poetic storytelling. Events and details of the story that are only found in later authors may have been passed on through oral tradition and could be as old as the Homeric poems. Visual art, such as vase painting, was another medium in which myths of the Trojan War circulated. In later ages playwrights, historians, and other intellectuals would create works inspired by the Trojan War. The three great tragedians of Athens, Aeschylus, Sophocles and Euripides, wrote a number of dramas that portray episodes from the Trojan War. Among Roman writers the most important is the 1st century BC poet Virgil; in Book 2 of his Aeneid, Aeneas narrates the sack of Troy. Legend Traditionally, the Trojan War arose from a sequence of events beginning with a quarrel between the goddesses Hera, Athena, and Aphrodite. Eris, the goddess of discord, was not invited to the wedding of Peleus and Thetis, and so arrived bearing a gift: a golden apple, inscribed "for the fairest". Each of the goddesses claimed to be the "fairest", and the rightful owner of the apple. They submitted the judgment to a shepherd they encountered tending his flock. Each of the goddesses promised the young man a