Full Idea
This changing cosmos was made because its maker is good, and therefore lacks envy; he therefore wished all things to be as like himself as possible.
Gist of Idea
The creator of the cosmos had no envy, and so wanted things to be as like himself as possible
Source
Plato (Timaeus [c.362 BCE], 29e)
Book Reference
Plato: 'Timaeus and Critias', ed/tr. Lee,Desmond [Penguin 1971], p.42