Full Idea
The incorporeal will never come into existence from body because the nature of the incorporeal does not exist in body.
Gist of Idea
The incorporeal is not in the nature of body, and so could not emerge from it
Source
Sextus Empiricus (Against the Physicists (two books) [c.180], I.225)
Book Reference
Sextus Empiricus: 'Against the Physicists/Against the Ethicists', ed/tr. Bury,R.G. [Harvard Loeb 1997], p.113
A Reaction
So nothing high could be made of pebbles because pebbles are not high? His argument depends on incorporeality having an intrinsically incorporeal nature. Pebbles have some height which can be extended.