[31] But God is the creator of time also; for he is the father of its father, and the father of time is the world, which made its own mother the creation of time, so that time stands towards God in the relation of a grandson; for this world is a younger son of God, inasmuch as it is perceptible by the outward sense; for the only son he speaks of as older than the world, is idea, [21] and this is not perceptible by the intellect; but having thought the other worthy of the rights of primogeniture, he has decided that it shall remain with him;