Catena Aurea on John 1:14: Cyril of Alexandria

The Word uniting to Himself a body of flesh animated with a rational soul, substantially, was ineffably and incomprehensibly made Man, and called the Son of man, and that not according to the will only, or good-pleasure, nor again by the assumption of the Person alone. The natures are different indeed which are brought into true union, but He Who is of both, Christ the Son, is One; the difference of the natures, on the other hand, not being destroyed in consequence of this coalition.