7 But again, their Triacontad is overthrown as to excess by the following considerations. They represent Horos (whom they call by a variety of names which I have mentioned in the preceding book) as having been produced by Monogenes just like the other Æons. Some of them maintain that this Horos was produced by Monogenes, while others affirm that he was sent forth by the Propator himself in His own image. They affirm further, that a production was formed by Monogenes— Christ and the Holy Spirit; and they do not reckon these in the number of the Pleroma, nor the Saviour either, whom they also declare to be Totum (all things).
Now, it is evident even to a blind man, that not merely thirty productions, as they maintain, were sent forth, but four more along with these thirty. For they reckon the Propator himself in the Pleroma, and those too, who in succession were produced by one another. Why is it, then, that those [other beings] are not reckoned as existing with these in the same Pleroma, since they were produced in the same manner? For what just reason can they assign for not reckoning along with the other Æons, either Christ, whom they describe as having, according to the Father's will, been produced by Monogenes, or the Holy Spirit, or Horos, whom they also call Soter (Saviour), and not even the Saviour Himself, who came to impart assistance and form to their Mother?
Whether is this as if these latter were weaker than the former, and therefore unworthy of the name of Æons, or of being numbered among them, or as if they were superior and more excellent? But how could they be weaker, since they were produced for the establishment and rectification of the others? And then, again, they cannot possibly be superior to the first and principal Tetrad, by which they were also produced; for it, too, is reckoned in the number above mentioned. These latter beings, then, ought also to have been numbered in the Pleroma of the Æons, or that should be deprived of the honour of those Æons which bear this appellation (the Tetrad).
Source: Adversus haereses (New Advent)