2 Next, with respect to the first production Ennœa, whom they also term Sige, from whom again they describe Nous and Aletheia as having been sent forth, they err in both particulars. For it is impossible that the thought (Ennœa) of any one, or his silence (Sige), should be understood apart from himself; and that, being sent forth beyond him, it should possess a special figure of its own. But if they assert that the (Ennœa) was not sent forth beyond Him, but continued one with the Propator, why then do they reckon her with the other Æons — with those who were not one [with the Father], and are on this account ignorant of His greatness?
If, however, she was so united (let us take this also into consideration), there is then an absolute necessity, that from this united and inseparable conjunction, which constitutes but one being, there should proceed an unseparated and united production, so that it should not be dissimilar to Him who sent it forth. But if this be so, then just as Bythus and Sige, so also Nous and Aletheia will form one and the same being, ever cleaving mutually together. And inasmuch as the one cannot be conceived of without the other, just as water cannot [be conceived of] without [the thought of] moisture, or fire without [the thought of] heat, or a stone without [the thought] of hardness (for these things are mutually bound together, and the one cannot be separated from the other, but always co-exists with it), so it behooves Bythus to be united in the same way with Ennœa, and Nous with Aletheia.
Logos and Zoe again, as being sent forth by those that are thus united, ought themselves to be united, and to constitute only one being. But, according to such a process of reasoning, Homo and Ecclesia too, and indeed all the remaining conjunctions of the Æons produced, ought to be united, and always to co-exist, the one with the other. For there is a necessity in their opinion, that a female Æon should exist side by side with a male one, inasmuch as she is, so to speak, [the forthputting of] his affection.
Source: Adversus haereses (New Advent)