VACUUM OR NOT.
Pythagoras and his followers say that beyond the world there is a
vacuum, into which and out of which the world hath its respiration.
The Stoics, that there is a vacuum into which infinite space by a
conflagration shall be dissolved. Posidonius, not an infinite vacuum,
but as much as suffices for the dissolution of the world; and this he
asserts in his first book concerning the Vacuum. Aristotle affirms, that
a vacuum does not exist. Plato concludes that neither within nor without
the world there is any vacuum.