Countless other proofs might be quoted without difficulty from apostles and prophets. But what has been already said is enough to show the drift of my teaching. I believe in one Father, one Son and one Holy Ghost; and I confess one Godhead, one Lordship, one substance and three hypostases. For the incarnation of the only begotten did not add to the number of the Trinity, and make the Trinity a quaternity, but, even after the incarnation the Trinity was still a Trinity. And while confessing that the only begotten Son of God was made man I do not deny the nature which He took, but confess, as I have said, both the nature which took and the nature which was taken. The union did not confound the properties of the natures. For if the air by receiving the light through all its parts does not cease to be air, nor yet at the same time destroy the nature of the light, for with our eyes we behold the light and by our feeling we recognise the air, as it meets us cold or hot, or moist or dry, so it were sheer folly to call the union of the Godhead and the manhood confusion. If created natures which share at once subordinate and temporal existence, when united and in some sense mingled, yet remain unimpaired, and, when the light withdraws, the nature of the air is left alone, much more proper is it, I apprehend, for the nature which fashioned all things, when conjoined with and united to the nature which it assumed from us, to be acknowledged to continue itself in its purity, and in like manner to preserve unimpaired that which it had assumed. Gold, too, when brought in contact with the fire, participates both in the colour and power of fire, but it does not lose its own nature, but at the same time remains gold and has the active qualities of fire. In this manner also the Lord’s body is a body, but impassible, incorruptible, immortal, of the Lord, divine and glorified with the divine glory. It is not separated from the Godhead, nor yet is of any one else, save of the only begotten Son of God Himself. For it does not show to us another person, but the only-begotten Himself clad in our nature.