The most notable appearance of the chariot in Greek mythology occurs when Phaëton, the son of Helios, in an attempt to drive the chariot of the sun, managed to set the earth on fire. This story led to the archaic meaning of a "phaeton" as one who drives a chariot or coach, especially at a reckless or dangerous speed. Plato, in his "Chariot Allegory", depicted a chariot drawn by two horses, one well behaved and the other troublesome, representing opposite impulses of human nature; the task of the charioteer, representing reason, was to stop the horses from going different ways and to guide them towards enlightenment.