He says, “The Life that is the same, and thoroughly single, must have one and the same outward expression for it, even though in mere names, and manner, and order it may seem to vary. For true expressions derive their precision from the subject realities which they indicate; different expressions are applied to different realities, the same to the same; and so one or other of these two things must of necessity be held; either that the reality indicated is quite different (if the expressions are), or else that the indicating expressions are not different;” and there is in this case no other subject reality besides the life of the Son, “for one either to rest an idea upon, or to cast a different expression upon.” Is there, I may ask, any unfitness in the words quoted, which would prevent them being rightly spoken or written about the Only-begotten? Is not the Son Himself also a “Life thoroughly single”? Is there not for Him also “one and the same” befitting “expression,” “though in mere names, and manner, and order He may seem to vary”? Must not, for Him also, “one or other of these two things be held” fixed, “either that the reality indicated is quite different, or else that the indicating expressions are not different,” there being no other subject reality, besides his life, “for one either to rest an idea upon, or to cast a different expression upon”? We mix up nothing here with what Eunomius has said about the Father; we have only passed from the same accepted premise to the same conclusion as he did, merely inserting the Son’s name instead. If, then, the Son too is a single life, unadulterated, removed from every sort of compositeness or complication, and there is no subject reality besides this life of the Son (for how in that which is simple can the mixture of anything foreign be suspected? what we have to think of along with something else is no longer simple), and if the Father’s substance also is a single life, and of this single life, by virtue of its very life and its very singleness, there are no differences, no increase or decrease in quantity or quality in it creating any variation, it needs must be that things thus coinciding in idea should be called by the same appellation also. If, that is, the thing that is detected both in the Father and the Son, I mean the singleness of life, is one, the very idea of singleness excluding, as we have said, any variation, it needs must be that the name befitting the one should be attached to the other also. For as that which reasons, and is mortal, and is capable of thought and knowledge, is called “man” equally in the case of Adam and of Abel, and this name of the nature is not altered either by the fact that Abel passed into existence by generation, or by the fact that Adam did so without generation, so, if the simplicity and incompositeness of the Father’s life has ungeneracy for its name, in like manner for the Son’s life the same idea will necessarily have to be attached to the same utterance, if, as Eunomius says, “one or other of these two things must of necessity be held; either that the reality indicated is quite different, or else that the indicating expressions are not different.”