4 Since, therefore, the Enthymesis herself could not exist separately, apart from the Æon, [it is obvious that] they bring forward still greater falsehood concerning her passion, when they further proceed to divide and separate it from her, while they declare that it was the substance of matter. As if God were not light, and as if no Word existed who could convict them, and overthrow their wickedness. For it is certainly true, that whatsoever the Æon thought, that she also suffered; and what she suffered, that she also thought. And her Enthymesis was, according to them, nothing else than the passion of one thinking how she might comprehend the incomprehensible. And thus Enthymesis (thought) was the passion; for she was thinking of things impossible. How then could affection and passion be separated and set apart from the Enthymesis, so as to become the substance of so vast a material creation, when Enthymesis herself was the passion, and the passion Enthymesis? Neither, therefore, can Enthymesis apart from the Æon, nor the affections apart from Enthymesis, separately possess substance; and thus once more their system breaks down and is destroyed.
Source: Adversus haereses (New Advent)