Answer to Eunomius' Second Book
For after saying that the Only-begotten God is not the same in essence with the true Father, and after sophistically inferring this from the opposition between generate and ungenerate, they work in silence to the conclusion, their impiety prevailing by the natural course of inference. And as the poisoner makes his drug acceptable to his victim by sweetening its deadliness with honey, and, as for himself, has only to offer it, while the drug insinuating itself into the vitals without further action on the part of the poisoner does its deadly work—so, too, do our opponents act. For qualifying their pernicious teaching with their sophistical refinements, as with honey, when they have infused into the mind of the hearer the venomous fallacy that God the Only-begotten is not very God, they cause all the rest to be inferred without saying a word. For when they are persuaded that He is not truly God, it follows as a matter of course that no other Divine attribute is truly applicable. For if He is truly neither Son nor God, except by an abuse of terms, then the other names which are given to Him in Holy Scripture are a divergence from the truth. For the one thing cannot be predicated of Him with truth, and the other be destitute of it; but they must needs follow one another, so that, if He be truly God, it follows that He is Judge and King, and that His several attributes are such as they are described, while, if His godhead be falsely asserted, neither will the truth hold respecting any of His other attributes. They, then, having been deceived into the persuasion that the attribute of Godhead is falsely applied to the Only-begotten, it follows that He is not rightly the object of worship and adoration, or, in fact, of any of the honours that are paid to God. In order, then, to render their attack upon the Saviour efficacious, this is the blasphemous method that they have adopted. There is no need, they urge, of looking at the collective attributes by which the Son's equality in honour and dignity with the Father is signified, but from the opposition between generate and ungenerate we must argue a distinctive difference of nature; for the Divine nature is that which is denoted by the term ungenerate. Again, since all men of sense regard it as impracticable to indicate the ineffable Being by any force of words, because neither does our knowledge extend to the comprehension of what transcends knowledge, nor does the ministry of words have such power in us as to avail for the full enunciation of our thought, where the mind is engaged on anything eminently lofty and divine,— these wise folk, on the contrary, convicting men in general of want of sense and ignorance of logic, assert their own knowledge of such matters, and their ability to impart it to whomsoever they will; and accordingly they maintain that the divine nature is simply ungeneracy per se, and declaring this to be sovereign and supreme, they make this word comprehend the whole greatness of Godhead, so as to necessitate the inference that if ungeneracy is the main point of the essence, and the other divine attributes are bound up with it, viz. Godhead, power, imperishableness and so on— if (I say) ungeneracy mean these, then, if this ungeneracy cannot be predicated of something, neither can the rest. For as reason, and risibility, and capacity of knowledge are proper to man, and what is not humanity may not be classed among the properties of his nature, so, if true Godhead consists in ungeneracy, then, to whatsoever thing the latter name does not properly belong, no one at all of the other distinguishing attributes of Godhead will be found in it. If, then, ungeneracy is not predicable of the Son, it follows that no other of His sublime and godlike attributes are properly ascribed to Him. This, then, they define as a right comprehension of the divine mysteries— the rejection of the Son's Godhead— all but shouting in the ear of those who would listen to them; “To you it is given to be perfect in knowledge, if only you believe not in God the Only-begotten as being very God, and honour not the Son as the Father is honoured, but regard Him as by nature a created being, not Lord and Master, but slave and subject.” For this is the aim and object of their design, though the blasphemy is cloaked in different terms.
Accordingly, enveloping his former special-pleading in the mazy evolutions of his sophistries, and dealing subtly with the term ungenerate, he steals away the intelligence of his dupes, saying to them, "Well, then, if neither by way of conception it is so, nor by deprivation, nor by division (for He is without parts), nor as being another in Himself (for He is the one only ungenerate), He Himself must be, in essence, ungenerate.
Seeing, then, the mischief resulting to the dupes of this fallacious reasoning— that to assent to His not being very God is a departure from our confession of Him as our Lord, to which conclusion indeed his words would bring his teaching— our master does not indeed deny that ungenerate is no partial predicate of God, himself also admitting that God is without quantity, or magnitude, or parts; but the statement that this term ought not to be applied to Him by way of mental conception he impugns, and gives his proofs. But again, shifting from this position, our writer in the second of his treatises meets us with his sophistry, combating his own statements in regard to mental conception.
Source: Answer to Eunomius' Second Book (New Advent)