Orientalis Ecclesiae §43

⁴³ We address a particular appeal to those of Our separated sons in the East who, though they hold St. Cyril in great veneration, yet refuse to acknowledge the authority of the Council of Chalcedon, because it solemnly defined that there are two natures in Jesus Christ. Let these bear in mind that the decrees which were later issued by the Council of Chalcedon as new errors arose are in no way contrary to the teaching of the Patriarch of Alexandria. As he himself clearly says, Not everything that heretics say is to be denied and rejected out of hand, for they profess much of what we also assert. . . . So it is also with Nestorius. He is not wrong in saying that there are two natures in Christ, so far as he means that the flesh is distinct from the Word of God; for the nature of the Word is indeed distinct from the nature of flesh. But he does not profess the union of the natures as we do.