[37] De Cœlo II. 10.
[38] Thus, (he adds) time also is threefold, for we have Beginning, Middle, and End. Therefore we apply three to Divine things, and also in common speech we call two “both,” and only say “all” when we reach three, following Nature’s law. The Pythagoreans say “The all and all things are bounded by the number three.”—De Cœlo I. 1.
[39] Par. iv. 1-3.
[41] Conv. II. iii. 59-65.
[42] It is also mentioned in a compilation of philosophers’ opinions, probably made in the fifth century a.d. by Stobæus, who is very likely quoting Plutarch.
[44] Indian astronomers also refused to accept the doctrine of Aryabhata. Varâha Mihira (sixth century a.d.) says:—“Others maintain that the earth revolves and not the sphere: if that were the case, falcons and other birds could not return from the ether to their nests.”
[45] Spheres all centring in one point.
[46] Mahaffy, The Progress of Hellenism in Alexander’s Empire, p. 119.