I. He states his account of the proceedings at the Synod.
God the Word is before all else my witness, being confident of my hope and faith in Christ the Lord and God of all, and discerning the proof of my holding the truth in these matters: but I call on your holiness, too, to bear witness to my heart and to the reasonableness of my opinions and words. But the wicked devil has exercised his evil influence upon my zeal and determination, whereby his power ought to have been destroyed. Whereupon he has exerted all his proper power and aroused Eusebius, bishop of the town of Dorylæum, against me, who presented an allegation to the holy bishop of the church in Constantinople, Flavian, and to certain others whom he found in the same city assembled on various matters of their own: in this he called me heretic, not raising any true accusation but contriving destruction for me and disturbance for the churches of God.
Their holinesses summoned me to reply to his accusation: but though I was delayed by a serious illness besides my advanced age, I came to clear myself, knowing well that a faction had been formed against my safety. And, indeed, together with a writ of appeal to which my signature was appended, I offered them a statement showing my confession upon the holy Faith. But when the holy Flavian did not receive the document, nor order it to be read, yet heard me in reply utter word for word that Faith which was put forth at Nicæa by the holy Synod, and confirmed at Ephesus, I was required to acknowledge two natures, and to anathematize those who denied this. But I, fearing the decision of the synod, and not wishing either to take away or to add one word contrary to the Faith put forth by the holy Synod of Nicæa, knowing, too, that our holy and blessed fathers and bishops Julius, Felix, Athanasius, and Gregorius rejected the phrase “two natures,” and not daring to discuss the nature of God the Word, who came into flesh in the last days entering the womb of the holy virgin Mary unchangeably as he willed and knew, becoming man in reality, not in fancy, nor yet venturing to anathematize our aforesaid Fathers, I asked them to let your holiness know these things, that you might judge what seemed right to you, undertaking by all means to follow your ruling.
Source: Letters (New Advent)