Furthermore, we have received in full faith your letters addressed to us, and give thanks to Almighty God, who, by the mutual confession of the faithful, guards the coat that is without seam woven from the top throughout, that is to say His Church, in the unity of grace, from all rent of error; and against the deluge (so to speak) of so many sins of the perishing world constructs an ark of many planks in which the elect of Almighty God may be preserved unto life. For, when we in our turn send the confession of our faith to you, and you show your charity towards us, what are we doing in holy Church but smearing the ark with pitch; lest any wave of error enter, and kill all the spiritual as being men, and the carnal as being beasts.
But, when you have wisely professed a right faith, it remains doubtless that you should keep the more warily the peace of hearts, because of what the Truth says, Have salt in yourselves, and have peace one with another. And Paul the apostle admonishes, saying, Endeavouring to keep the unity of the Spirit in the bond of peace. And again he says, Follow peace with all men, and holiness, without which no man shall see God. Which peace indeed you will then truly have with us, if you turn away from the pride of a profane name, according to what the same teacher of the Gentiles says, O Timothy, keep that which is committed to your trust, avoiding profane novelties of words. For indeed it is too bad, if these who have been made preachers of humility should glory in the elation of a vain name, when the true preacher says, But God forbid that I should glory, save in the cross of our Lord Jesus Christ. He then is truly glorious who glories not in temporal power, but, for the name of Christ, glories in His passion. Herein therefore we embrace you from the bottom of our heart, herein we recognize you as priests, if, rejecting the vanity of words, you occupy the place of holiness with holy humility. For behold, we have been scandalized by this impious appellation, and retain in our mind and express in words by no means slight complaints. But your Fraternity knows how the Truth says, If you offer your gift before the altar, and there rememberest that your brother has ought against you, leave there your gift, and go your way to be first reconciled to your brother, and then you shall come and offer your gift. Herein is to be considered, that, while every fault is done away by the offering of sacrifice, so great is the evil of offense engendered in another's heart that from one who has so sinned the Lord accepts not the sacrifice itself which is wont to do away sin. Take heed then with speed to wipe off cause of offense from your heart, that Almighty God may be able to regard as acceptable the sacrifice of your offering.
Furthermore, while you have truly and accurately professed the right faith, we find that among those whom you have held to be condemned by the most holy general synods you have condemned a certain Eudoxius; whose name we have not found mentioned in the Latin language either in synods or in the books of the bishops of blessed memory, Epiphanius, Augustine, or Philaster, whom we know to have been the chief disputants against heretics. Now if any one of the Catholic Fathers really condemns him, we undoubtedly follow their opinion. If, however, in your synodical epistle you have wished to condemn by name those also who, apart from the holy synods, are condemned in the writings of the Fathers, your Fraternity has mentioned too few by many; but if those whom the general synods reject, then too many by this one. But in the midst of all these things it is to be remembered, that in order that we may be free to profess the true faith and to order whatever has to be done in peace and concord, we ought to pray incessantly for the life of our most serene lords and of their offspring, that Almighty God would subdue barbarous nations under their feet, and grant them long and happy lives, to the end that through a Christian empire the faith which is in Christ may reign.
Source: Register of Letters (New Advent)