To Cledonius the Priest Against Apollinarius. (Ep. CI.)
If anyone has put his trust in Him as a Man without a human mind, he is really bereft of mind, and quite unworthy of salvation. For that which He has not assumed He has not healed; but that which is united to His Godhead is also saved. If only half Adam fell, then that which Christ assumes and saves may be half also; but if the whole of his nature fell, it must be united to the whole nature of Him that was begotten, and so be saved as a whole. Let them not, then, begrudge us our complete salvation, or clothe the Saviour only with bones and nerves and the portraiture of humanity. For if His Manhood is without soul, even the Arians admit this, that they may attribute His Passion to the Godhead, as that which gives motion to the body is also that which suffers. But if He has a soul, and yet is without a mind, how is He man, for man is not a mindless animal? And this would necessarily involve that while His form and tabernacle was human, His soul should be that of a horse or an ox, or some other of the brute creation. This, then, would be what He saves; and I have been deceived by the Truth, and led to boast of an honour which had been bestowed upon another. But if His Manhood is intellectual and nor without mind, let them cease to be thus really mindless. But, says such an one, the Godhead took the place of the human intellect. How does this touch me? For Godhead joined to flesh alone is not man, nor to soul alone, nor to both apart from intellect, which is the most essential part of man. Keep then the whole man, and mingle Godhead therewith, that you may benefit me in my completeness. But, he asserts, He could not contain Two perfect Natures. Not if you only look at Him in a bodily fashion. For a bushel measure will not hold two bushels, nor will the space of one body hold two or more bodies. But if you will look at what is mental and incorporeal, remember that I in my one personality can contain soul and reason and mind and the Holy Spirit; and before me this world, by which I mean the system of things visible and invisible, contained Father, Son, and Holy Ghost. For such is the nature of intellectual Existences, that they can mingle with one another and with bodies, incorporeally and invisibly. For many sounds are comprehended by one ear; and the eyes of many are occupied by the same visible objects, and the smell by odours; nor are the senses narrowed by each other, or crowded out, nor the objects of sense diminished by the multitude of the perceptions. But where is there mind of man or angel so perfect in comparison of the Godhead that the presence of the greater must crowd out the other? The light is nothing compared with the sun, nor a little damp compared with a river, that we must first do away with the lesser, and take the light from a house, or the moisture from the earth, to enable it to contain the greater and more perfect. For how shall one thing contain two completenesses, either the house, the sunbeam and the sun, or the earth, the moisture and the river? Here is matter for inquiry; for indeed the question is worthy of much consideration. Do they not know, then, that what is perfect by comparison with one thing may be imperfect by comparison with another, as a hill compared with a mountain, or a grain of mustard seed with a bean or any other of the larger seeds, although it may be called larger than any of the same kind? Or, if you like, an Angel compared with God, or a man with an Angel. So our mind is perfect and commanding, but only in respect of soul and body; not absolutely perfect; and a servant and a subject of God, not a sharer of His Princedom and honour. So Moses was a God to Pharaoh, but a servant of God, as it is written; and the stars which illumine the night are hidden by the Sun, so much that you could not even know of their existence by daylight; and a little torch brought near a great blaze is neither destroyed, nor seen, nor extinguished; but is all one blaze, the bigger one prevailing over the other.
But, it may be said, our mind is subject to condemnation. What then of our flesh? Is that not subject to condemnation? You must therefore either set aside the latter on account of sin, or admit the former on account of salvation. If He assumed the worse that He might sanctify it by His incarnation, may He not assume the better that it may be sanctified by His becoming Man? If the clay was leavened and has become a new lump, O you wise men, shall not the Image be leavened and mingled with God, being deified by His Godhead? And I will add this also: If the mind was utterly rejected, as prone to sin and subject to damnation, and for this reason He assumed a body but left out the mind, then there is an excuse for them who sin with the mind; for the witness of God— according to you— has shown the impossibility of healing it. Let me state the greater results. You, my good sir, dishonour my mind (you a Sarcolater, if I am an Anthropolater) that you may tie God down to the Flesh, since He cannot be otherwise tied; and therefore you take away the wall of partition. But what is my theory, who am but an ignorant man, and no Philosopher. Mind is mingled with mind, as nearer and more closely related, and through it with flesh, being a Mediator between God and carnality.
Further let us see what is their account of the assumption of Manhood, or the assumption of Flesh, as they call it. If it was in order that God, otherwise incomprehensible, might be comprehended, and might converse with men through His Flesh as through a veil, their mask and the drama which they represent is a pretty one, not to say that it was open to Him to converse with us in other ways, as of old, in the burning bush and in the appearance of a man. But if it was that He might destroy the condemnation by sanctifying like by like, then as He needed flesh for the sake of the flesh which had incurred condemnation, and soul for the sake of our soul, so, too, He needed mind for the sake of mind, which not only fell in Adam, but was the first to be affected, as the doctors say of illnesses. For that which received the command was that which failed to keep the command, and that which failed to keep it was that also which dared to transgress; and that which transgressed was that which stood most in need of salvation; and that which needed salvation was that which also He took upon Him. Therefore, Mind was taken upon Him. This has now been demonstrated, whether they like it or no, by, to use their own expression, geometrical and necessary proofs. But you are acting as if, when a man's eye had been injured and his foot had been injured in consequence, you were to attend to the foot and leave the eye uncared for; or as if, when a painter had drawn something badly, you were to alter the picture, but to pass over the artist as if he had succeeded. But if they, overwhelmed by these arguments, take refuge in the proposition that it is possible for God to save man even apart from mind, why, I suppose that it would be possible for Him to do so also apart from flesh by a mere act of will, just as He works all other things, and has wrought them without body. Take away, then, the flesh as well as the mind, that your monstrous folly may be complete. But they are deceived by the latter, and, therefore, they run to the flesh, because they do not know the custom of Scripture. We will teach them this also. For what need is there even to mention to those who know it, the fact that everywhere in Scripture he is called Man, and the Son of Man?
Source: Letters (New Advent)