Full Idea
There were, before the world came into existence, being, space, and becoming, three distinct realities.
Gist of Idea
Before the existence of the world there must have been being, space and becoming
Source
Plato (Timaeus [c.362 BCE], 52d)
Book Reference
Plato: 'Timaeus and Critias', ed/tr. Lee,Desmond [Penguin 1971], p.72
A Reaction
'Becoming' is the central idea of Heraclitus, and must be what Aristotle calls 'potentiality' [dunamis]. If it was 'before' creation, he should add time to the list. Are these three 'distinct'? Being has potential.