Book 3
1.73
The universe is composed of fire, water, air and earth; of fire in order to be visible; of earth in order to be solid; of water and air in order to be proportional.Cf. Tim. 31 b-33 a. It would be more correct to say in order that the bonds, the inserted terms (air and water), which unite fire to earth, may be proportional. For the best of bonds is that which makes itself and the things which it binds as complete a unity as possible; and the nature of proportion is to accomplish this most perfectly (Tim. 31 c). For the powers represented by solids are connected by two mean proportionals in a way to secure the complete unity of the whole. And the universe was made of all the elements in order to be complete and indestructible.
1.73
Time was created as an image of eternity. And while the latter remains for ever at rest, time consists in the motion of the universe. For night and day and month and the like are all parts of time; for which reason, apart from the nature of the universe, time has no existence. But so soon as the universe is fashioned time exists.Cf. Plato, Tim. 37 d-38 b.
