“ As a punishment, Ixion was seized with madness, until Zeus purified him of his crime and admitted him as a guest to Olympus. Ixion abused his pardon by trying to seduce Hera; but the goddess substituted for herself a cloud, by which he became the father of the Centaurs. Zeus bound him on a fiery wheel, which rolls unceasingly through the air or (according to the later version) in the underworld (Pindar, Pythia, ii. 21; Ovid, Metam. iv. 461; Virgil, Aeneid, vi. 601) . Ixion is generally taken to represent the eternally moving sun. ”