Answer to Eunomius' Second Book
But I do not think that we need linger on this, nor minutely examine that which follows. To the more attentive reader, the argument elaborated by our opponent will itself appear in the light of a special pleader on the side of orthodoxy. He says, for instance, that imperishability and immortality are the very essence of the Deity. For my part I see no need to contend with him, no matter whether these qualities aforesaid only accrue to the Deity, or whether they are, by virtue of their signification, His essence; whichever of these two views is adopted, it will completely support our argument. For if the being imperishable only accrues to the essence, the not being generated will also most certainly only accrue to it; and so the idea of ungeneracy will be ejected from being the mark of the essence. If, on the other hand, because God is not subject to destruction, one affirms imperishability to be His essence, and, because He is stronger than death, one therefore defines immortality to be His very essence, and if the Son is imperishable and immortal (as He is), imperishability and immortality will also be the essence of the Only-begotten. If, then, the Father is imperishability, and the Son imperishability, and each of these imperishabilities is the essence, and no difference exists between them as regards the idea of imperishability, one essence will differ from the other essence in no way at all, seeing that in both equally the nature is a stranger to any corruption. Even if he should resume the same method as before, and place us on the horns of his dilemma from which, as he thinks, there is no escape, saying that, if we distinguish that which accrues from that which is, we make the Deity composite, whereas if we acknowledge His simplicity, then the imperishability and the ungeneracy are seen at once to be significative of His very essence— even then again we can show that he is fighting for our side. For if he will have it that God is made composite by our saying that anything accrues to Him, then he certainly cannot eject the Fatherhood either from the essence, but must confess that He is Father by His nature as much as He is imperishable and immortal; and so without intending it he must admit the Son also to partake of that intimate nature; for it will not be possible, if God is essentially Father, to exclude the Son from a relationship to Him thus essential. But if he says that the Fatherhood accrues to God, but is outside the circle of the substance, then he must concede to us that we may say anything we like accrues to the Deity, since the Divine simplicity is in no way marred, if His quality of ungeneracy is made to mean something outside the essence. If, however, he declares that the imperishability and the ungeneracy do mean the essence, and if he insists that these two words are equivalent, since, by reason of the same meaning lying in each, there is no difference between them, and if he thus assert that the very idea of imperishability and ungeneracy is one and the same, the One who is the first of these must necessarily be the second too. But that the Son is imperishable, let us observe, even these men entertain no doubt; therefore, by Eunomius' argument, the Son also is ungenerate, if imperishability and ungeneracy are to mean the same thing. So that he must accept one of two alternatives; either he must agree with us that ungeneracy is other than imperishability, or, if he abides by his assertions, he must in various ways speak blasphemy about the Only-begotten, making Him, for instance, perishable, in order that he may not have to say that He is ungenerate; or ungenerate, in order that he may not prove Him perishable.
But now I do not know which it is best to do; to pursue step by step this subject, or to put an end here to our contest with such folly. Well, as in the case of those who are selling destructive drugs, a very slight experiment guarantees to the purchasers the destructive power latent in all the drug, and no one doubts, after he has found out by an experiment its partial deadliness, that the drug sold is entirely of this deadly character, so I think it can be no longer doubtful to reflecting persons that this poisonous dose of argument, of which a specimen has been shown in what we have already examined, will continue throughout to be such as that which we have just refuted. For this reason I think it better not to prolong this detailed dwelling upon his absurdities. Nevertheless, seeing that the champions of this error discover plausibility for it from many quarters, and there is reason to fear lest to have overlooked any of their efforts will be made a specious pretext for misrepresenting us as having shirked their strongest point, I beg for this reason those who follow us out in this work to accompany our argument still, without charging us with prolixity, while it expands itself to meet the attacks of error along the whole line. Observe, then, that he has scarcely ceased weaving in the depths of his slumber this dream about conception before he arms himself again from his storehouse with those monstrous and senseless methods, and turns his argument into another dream much more meaningless than his previous illusion. But we may best know how absurd his efforts are by observing his treatment of “privation”; though to grapple with his nonsense in all its range would require a Eunomius, or one of his school, men who have never spent a thought on serious realities. We will, however, in a concise way run over the heads of it, that while none of his charges is omitted, no meaningless item may help to prolong the discussion to an absurd length.
Source: Answer to Eunomius' Second Book (New Advent)