_Phys._ i. 4; 187 a 20. And others say that the opposites existing in the one are separated out of it, as Anaximandros says, and as many as say that things are one and many, as Empedokles and Anaxagoras; for these separate other things out of the mixture.... And Anaxagoras seems to have thought (the elements) infinite because he assumed the common opinion of the physicists to be true, that nothing arises out of non-being; for this is why they say, as they do, that all things were together, and he established the fact that such ‘arising’ was change of form. _Phys._ i. 4; 187 a 36. They thought that (what arose) arose necessarily out of things that are and their attributes, and, because the masses were so small, out of what we cannot perceive. Wherefore they say that everything was mixed in everything because they saw everything arising out of everything; and different things appeared and were called different from each other according to what is present in greater number in the mixture of the infinites; for the whole is not purely white or black or sweet or flesh or bone, but the nature of the thing seems to be that of which it has the most. _Phys._ iii. 4; 203 a 19. And as many as make the elements infinite, as Anaxagoras and Demokritos, the former out of homoeomeries.... _Phys._ iii. 5; 205 b 1. Anaxagoras speaks strangely about the permanence of the infinite; for he says that the infinite itself establishes itself—that is, it is in itself; for nothing else surrounds it, so that wherever anything may be, it is there in virtue of its origin. _Phys._ iv. 6; 213 a 22. Some who try to show that the void does not exist, do not prove this of what men are wont to call a void, but they make the mistake Anaxagoras did and those who attempted to prove it after this manner. For they show that air is something, blowing skins up tight, and showing how strong air is, and shutting it up in clepsydrae. _Phys._ viii. 1; 250 b 24. For Anaxagoras says that when all things were together and had been at rest for an infinite time, mind introduced motion and caused separation.[89] _Phys._ viii. 5; 256 b 24. So Anaxagoras is right in saying that mind is not affected by other things and is unmixed, since he makes it the first principle of motion. For thus only, being unmoved, it might move, and being unmixed, it might rule.[90] _De caelo_ i. 3; 270 b 24. Anaxagoras does not use this word [αἰθήρ] rightly, for he uses the word aether instead of fire. _De caelo_ iii. 2; 301 a 12. Anaxagoras starts to construct the universe out of non-moving bodies.