These lessons we have learnt alike from the holy Scripture and from the holy Fathers who have expounded it, Alexander and Athanasius, loud voiced heralds of the truth, who have been ornaments of your apostolic see; from Basil and from Gregory and the rest of the lights of the world; and that, in our endeavour to shut the mouths of them that dare to oppose the blessed Theophilus and Cyril, we use their works, our own writings testify. For we are most anxious by the medicines supplied by very holy men to heal them that deny the distinction between the Lord’s flesh and the Godhead, and who maintain at one moment that the divine nature was changed into flesh, and at another that the flesh was transmuted into nature of Godhead.