"Timaeus" is a philosophical dialogue written by Plato that explores the origins and nature of the universe. The book takes its name from one of the main characters, Timaeus, a philosopher from Pythagoras' school. The dialogue begins with a discussion between Socrates and his companions about the nature of the universe. Socrates suggests that in order to understand the universe, they must first understand its creator. He then invites Timaeus to speak about his views on the creation of the universe.