[Our] first safety is to guard the rule of the right faith and to deviate in no wise from the ordinances of the Fathers; because we cannot pass over the statement of our Lord Jesus Christ who said: “Thou art Peter and upon this rock I will build my church, etc.” [Matt 16:18]. These [words] which were spoken, are proved by the effects of the deeds, because in the Apostolic See the Catholic religion has always been preserved without stain… We condemn, too, and anathematize Acacius, formerly bishop of Constantinople, who was condemned by the Apostolic See, their confederate and follower, or those who remained in the society of their communion, because Acacius justly merited a sentence in condemnation like theirs in whose communion he mingled. No less do we condemn Peter of Antioch with his followers, and the followers of all mentioned above… Moreover, we accept and approve all the letters of blessed Leo the Pope, which he wrote regarding the Christian religion, just as we said before, following the Apostolic See in all things, and extolling all its ordinances. And, therefore, I hope that I may merit to be in the one communion with you, which the Apostolic See proclaims, in which there is the whole and the true and the perfect solidity of the Christian religion, promising that in the future the names of those separated from the communion of the Catholic Church, that is, those not agreeing with the Apostolic See, shall not be read during the sacred mysteries. But if I shall attempt in any way to deviate from my profession, I confess that I am a confederate in my opinion with those whom I have condemned. However, I have with my own hand signed this profession of mine, and to you, Hormisdas, the holy and venerable Pope of the City of Rome, I have directed it.
Denzinger and Rahner, eds., The Sources of Catholic Dogma, 73-74, qtd. in Ybarra. p. 397.
