But if man should at any time be said to have one nature, the word “nature” is here used instead of “species,” as when we say that man does not differ from man in any difference of nature. But since all men are fashioned in the same way, and are composed of soul and body, and each has two distinct natures, they are all brought under one definition. And this is not unreasonable, for the holy Athanasius spake of all created things as having one nature forasmuch as they were all produced, expressing himself thus in his Oration against those who blasphemed the Holy Spirit: “That the Holy Spirit is above all creation, and different from the nature of things produced and peculiar to divinity, we may again perceive. For whatever is seen to be common to many things, and not more in one and less in another, is called essence Epist. 2 ad Serap., towards the end; Collect., as above, c. 19.. Since, then, every man is composed of soul and body, accordingly we speak of man as having one nature. But we cannot speak of our Lord’s subsistence as one nature: for each nature preserves, even after the union, its natural properties, nor can we find a class of Christs. For no other Christ was born both of divinity and of humanity to be at once God and man.”