Full Idea
It is fitting for only the most divine things of all to be always the same and in the same state and in the same respects, and the nature of body is not of this ordering.
Gist of Idea
Only divine things can always stay the same, and bodies are not like that
Source
Plato (The Statesman [c.356 BCE], 269b)
Book Reference
Plato: 'Statesman', ed/tr. Bernadete,Seth [University of Chicago 1986], p.18