The very word philosophy, meaning in Greek the love of wisdom, suggests what the world owes to the Greeks. The first thinkers consciously to reject the account of the world handed down in the traditional myths emanated from Ionia in the seventh and sixth centuries. Aristotle notes that prosperity in Ionia gave leisure time that allowed philosophical and scientific speculation. The movement from myth to philosophy was perhaps made easier by the nature of the myths themselves. In the Iliad Zeus is neither omnipotent nor omniscient, nor did he create the world. He shares his power with other gods and took power himself from his father. He is subject to laws beyond his own will, recognizing that he cannot save his son Sarpedon from fate (16, 433-461). The Homeric concept of fate might suggest a topic for speculation to the enquiring mind.