3 Apart from this, however, how can those things which belong to creation, various, manifold, and innumerable as they are, be the images of those thirty Æons which are within the Pleroma, whose names, as these men fix them, I have set forth in the book which precedes this? And not only will they be unable to adapt the [vast] variety of creation at large to the [comparative] smallness of their Pleroma, but they cannot do this even with respect to any one part of it, whether [that possessed by] celestial or terrestrial beings, or those that live in the waters.
For they themselves testify that their Pleroma consists of thirty Æons; but any one will undertake to show that, in a single department of those [created beings] which have been mentioned, they reckon that there are not thirty, but many thousands of species. How then can those things, which constitute such a multiform creation, which are opposed in nature to each other, and disagree among themselves, and destroy the one the other, be the images and likenesses of the thirty Æons of the Pleroma, if indeed, as they declare, these being possessed of one nature, are of equal and similar properties, and exhibit no differences [among themselves]?
For it was incumbent, if these things are images of those Æons—inasmuch as they declare that some men are wicked by nature, and some, on the other hand, naturally good—to point out such differences also among their Æons, and to maintain that some of them were produced naturally good, while some were naturally evil, so that the supposition of the likeness of those things might harmonize with the Æons. Moreover, since there are in the world some creatures that are gentle, and others that are fierce, some that are innocuous, while others are hurtful and destroy the rest; some have their abode on the earth, others in the water, others in the air, and others in the heaven; in like manner, they are bound to show that the Æons possess such properties, if indeed the one are the images of the others.
And besides; “the eternal fire which the Father has prepared for the devil and his angels,” — they ought to show of which of those Æons that are above it is the image; for it, too, is reckoned part of the creation.
Source: Adversus haereses (New Advent)