Full Idea
If causes were non-existent everything would have been produced by everything, and at random.
Gist of Idea
If there were no causes then everything would have been randomly produced by everything
Source
Sextus Empiricus (Outlines of Pyrrhonism [c.180], III.18)
Book Reference
Sextus Empiricus: 'Outlines of Pyrrhonism', ed/tr. Bury,R.G. [Prometheus 1990], p.193