10 After He had said, “these does,” why did He add, “in like manner does”? Lest another distorted understanding or error should spring up in the mind. You see, for instance, a man's work: in man there is mind and body; the mind rules the body, but there is a great difference between body and mind: the body is visible, the mind is invisible: there is a great difference between the power and virtue of the mind and that of any kind of body whatever, be it even a heavenly body.
Still the mind rules its own body, and the body does; and what the mind appears to do, this the body does also. Thus the body appears to do this same thing that the mind does, but not “in like manner.” How does this same, but not in like manner? The mind frames a word in itself; it commands the tongue, and the tongue produces the word which the mind framed: the mind made, and the tongue made; the lord of the body made, and the servant made; but that the servant might make, it received of its lord what to make, and made while the lord commanded.
The same thing was made by both, but was it in like manner? How not in like manner? Says some one. See, the word that my mind formed, remains in me; that which my tongue made, passed through the smitten air, and is not. When you have said a word in your mind, and uttered it by your tongue, return to your mind, and see that the word which you have made is there still. Has it remained on your tongue, just as it has in your mind? What was uttered by the tongue, the tongue made by sounding, the mind made by thinking; but what the tongue uttered has passed away, what the mind thought remains.
Therefore the body made that which the mind made, but not in like manner. For the mind, indeed, made that which the mind may hold, but the tongue made what sounds and strikes the ear through the air. Do you chase the syllables, and cause them to remain? Well, not in such manner the Father and the Son; but “these same does,” and “in like manner does.” If God made heaven that remains, this heaven that remains the Son made. If God the Father made man that is mortal, the same man that is mortal the Son made.
What things soever the Father made that endure, these things that endure made also the Son, because in like manner He made; and what things soever the Father made that are temporal, these same things that are temporal made also the Son, because He made not only the same, but also in like manner made. For the Father made by the Son, since by the Word the Father made all things.
Source: Tractates on the Gospel of John (New Advent)