II. Let him fortify the faithful by the public reading aloud of quotations from the Fathers bearing on the question and of the Tome.
For there is no new preaching in the letter which I wrote in reply to Flavian of holy memory, when he consulted me about the Incarnation of our Lord Jesus Christ; for in nothing did I depart from that rule of Faith which was outspokenly maintained by your ancestors and ours. And if Dioscorus had been willing to follow and imitate them, he would have abided in the Body of Christ, having in the works of Athanasius of blessed memory the materials for instruction, and in the discourses of Theophilus and Cyril of holy remembrance the means rather of praise-worthily opposing the already condemned dogma than of choosing to consort with Eutyches in his blasphemy.
This therefore, beloved brother, I advise in my anxiety for our common Faith that, because the enemies of Christ's cross lie in watch for all our words and syllables, we give them not the slightest occasion for falsely asserting that we agree with the Nestorian doctrine. And you must so diligently exhort the laity and clergy and all the brotherhood to advance in the Faith as to show that you teach nothing new but instil into all men's breasts those things, which the Fathers of revered memory have with harmony of statement taught, and with which in all things our epistle agrees.
And this must be shown not only by your words but also by the actually reading aloud of previous statements, that God's people may know that what the Fathers received from their predecessors and handed on to their descendants, is still instilled into them in the present day. And to this end, when the statements of the aforesaid priests have first been read, then lastly let my writings also be recited, that the ears of the faithful may attest that we preach nothing else than what we received from our forefathers.
And because their understandings are but little practised in discerning these things, let them at least learn from the letters of the Fathers, how ancient this evil is, which is now condemned by us in Nestorius as well as in Eutyches, who have both been ashamed to preach the gospel of Christ according to the Lord's own teaching.
Source: Letters (New Advent)