The modern world has the knowledge about Ancient Greek gods and goddesses thanks to Greek poet Hesiod's The Theogony. It is a mythological poem which was composed c. 700 BC. Another source which reached us is Roman poet Ovid's (43 BC - AD 17/18) Metamorphoses. It is a chronicle which starts with the creation of the world and ends with a dedication to Juilius Ceaser. The epic poem contains around 250 myths!