Answer to Eunomius' Second Book
Still I cannot see what profit there is in deigning to examine such nonsense. For a man like myself, who has lived to gray hairs, and whose eyes are fixed on truth alone, to take upon his lips the absurd and flippant utterances of a contentious foe, incurs no slight danger of bringing condemnation on himself. I will therefore pass over both those words and the adjoining passage; this, for instance, “Truth gives no evidence of any union of natures with God.” Well, if these words had not been spoken, who ever was there (except yourself) who mentioned a double nature in the Deity at all? You, however, unite each idea of each name with the essence of the Father, and deny that anything externally accrues to Him, centering every one of His names in that essence. Again, “Neither does she write in the statute-book of our religion any idea that is external and fabricated by ourselves.” With regard to these words again I shall deprecate the idea that I have quoted them with a view of amusing the reader with their absurdity; rather I have done so with a view to show with what a slender equipment of arguments this man, after rating us for our want of system, advances to take these audacious liberties with the name of Truth. What is he in reasoning, and what is he in speech, that he should thus revel in showing himself off before his hidebound readers, who applaud him as victorious over everybody by force of argument when he has brought these disjointed utterances of his dry bombastic jargon to an end. “Immortality,” he says, “is the essence itself.” But what, then, do you assert to be the essence of the Only-begotten? I ask you that: is it immortality, or is it not? For remember that in His essence also the singleness admits, as you say, of no complexity of nature. If, then Eunomius denies that immortality is the essence of the Son, it is clear what he is aiming at; for it does not require an exceedingly penetrating understanding to discover what is the direct opposite to the immortal. Just as the logic of dichotomy exhibits the destructible instead of the indestructible, and the mutable instead of the immutable, so it exhibits the mortal instead of the immortal. What, therefore, will this setter forth of new doctrine do? What proper name will he give us for the essence of the Only-begotten? Again I put this question to our author. He must either grant that it is immortality, or deny it. If, then, he will not assent to its being immortality, he must assent to the contradictory proposition; by negativing the superior term he proves that it is death. If, on the other hand, he shrinks from anything so monstrous, and names the essence of the Only-begotten also as immortality, he must perforce agree with us that there is in consequence no difference whatever, as to essence, between them. If the nature of the Father and the nature of the Son are equally immortality, and if immortality does not divide itself by any manner of difference, then it is confessed by our foes themselves, that on the score of essence no manner of difference is discoverable between the Father and the Son.
But it is time now to expose that angry accusation which he brings against us at the close of his treatise, saying that we affirm the Father to be from what is absolutely non-existent. Stealing an expression from its context, from which he drags it, as from its surrounding body, into a naked isolation, he tries to carp at it by worrying the word, or rather covering it with the slaver of his maddened teeth. I will therefore first give the meaning of the passage in which our Master explained this point to us; then I will quote it word for word: by so doing the man who intrudes upon the expository work of orthodox writers, only to undermine the truth itself, will be revealed in his true colours. Our Master, in introducing us in his own treatise to the true meaning of ungenerate, suggested a way to arrive at a real knowledge of the term in dispute somewhat as follows, pointing out at the same time that it had a meaning very far removed from any idea of essence. He says that the Evangelist, in beginning our Lord's lineage according to the flesh from Joseph, and then going back to the generation continually preceding, and then ending the genealogy in Adam, and, because there was no earthly father anterior to this first-formed creature, saying that he was “the son of God,” makes it obvious to every reader's intelligence with regard to the Deity, that He, from Whom Adam was, has not Himself His subsistence from another, after the likeness of the human lives just given. When, having passed through the whole of it, we at last grasp the thought of the Deity, we perceive at the same moment the First Cause of it all. But if any such cause be found dependent on something else, then it is not a first cause. Therefore, if God is the First Cause of the Universe, there will be nothing whatever transcending this cause of all things. Such was our Master's exposition of the meaning of ungenerate; and in order that our testimony about it may not go beyond the exact truth, I will quote the passage.
“The evangelist Luke, when giving the genealogy according to the flesh of our God and Saviour Jesus Christ, and stepping up from the last to the first, begins with Joseph, saying that he was 'the son of Heli, which was the son of Matthat,' and so by ascending brings his enumeration up to Adam; but when he has come to the top and said, that Seth 'was the son of Adam, which was the son of God,' then he stops this process. As, then, he has said that Adam was the son of God, we will ask these men, 'But God, who is He the son of?' Is it not obvious to every one's intelligence that God is the son of no one? But to be the son of no one is to be without a cause, plainly; and to be without a cause is to be ungenerate. Now in the case of men, the being son of somebody is not the essence; no more, in the case of the Deity Who rules the world, is it possible to say that the being ungenerate is the essence.”
Source: Answer to Eunomius' Second Book (New Advent)