Praeparatio Evangelica (The Preparation of the Gospel)

'THE Pythagoreans: outside the world there is a vacuum, into and out of which the world breathes.

'The Stoics: infinite (vacuum), into which the world is also dissolved by the conflagration.

'Poseidonius: not infinite, but sufficiently large for the dissolution.

'Plato, Aristotle: no vacuum either outside the world or inside.'