[57] But On is said to be a hill, and it means, symbolically, the mind; for all reasonings are stored up in the mind: and the lawgiver himself is a witness of this, calling On, Heliopolis, the city of the sun. For as the sun, when he rises, shows visibly the things [34] [35] [36] which have been hidden by night, so also the mind, sending forth its own proper light, causes all bodies and all things to be seen visibly at a distance.