Full Idea
Nothing comes into being from what does not exist, nor is it destroyed into what does not exist.
Gist of Idea
Nothing comes from non-existence, or passes into it
Source
report of Democritus (fragments/reports [c.431 BCE], A001) by Diogenes Laertius - Lives of Eminent Philosophers 09.44
Book Reference
Democritus: 'Early Greek Phil VII: Democritus', ed/tr. Laks,A/Most,G [Harvard Loeb 2016], p.75
A Reaction
[part of a concise summary of Democritus by DL] Probably an intuition about conservation laws, rather than a speculation about the Big Bang.