Besides he is mistaken, in that, giving us the material cause, he is silent as to the efficient cause of beings; for this thing which he makes his Infinite can be nothing but matter; but operation cannot come about in the sphere of matter, except an efficient cause be annexed.
Anaximenes his fellow-citizen pronounceth, that air is the principle of all beings; from it all receive their original, and into it all return.

He affirms that our soul is nothing but air; it is that which constitutes and preserves; the whole world is invested with spirit and air.

For spirit and air are synonymous.

This person is in this deficient, in that he concludes that of pure air, which is a simple body and is made of one only form, all animals are composed.

It is not possible to think that a single principle should be the matter of all things, from whence they receive their subsistence; besides this there must be an operating cause.