3 I beg you, therefore, to call to mind that, when I was in your town, and was discussing with you a little concerning the communion of Christian unity, certain Acts were brought forward by you, from which a statement was read aloud that about seventy bishops condemned Cæcilianus, formerly our Bishop of Carthage, along with his colleagues, and those by whom he was ordained. In the same Acts was given a full account of the case of Felix of Aptunga, as one singularly odious and criminal. When all these had been read, I answered that it was not to be wondered at if the men who then caused that schism, and who did not scruple to tamper with Acts, thought that it was right to condemn those against whom they had been instigated by envious and wicked men, although the sentence was passed without deliberation, in the absence of the parties condemned, and without acquainting them with the matter laid to their charge. I added that we have other ecclesiastical Acts, according to which Secundus of Tigisis, who was for the time Primate of Numidia, left those who, being there present, confessed themselves traditors to the judgment of God, and permitted them to remain in the episcopal sees which they then occupied; and I stated that the names of these men are in the list of those who condemned Cæcilianus, and that this Secundus himself was president of the Council in which he secured the condemnation of those who, being absent, were accused as traditors, by the votes of those whom he pardoned when, being present, they confessed the same crime.
4. I then said that some time after the ordination of Majorinus, whom they with impious wickedness set up against Cæcilianus, raising one altar against another, and rending with infatuated contentiousness the unity of Christ, they applied to Constantine, who was then emperor, to appoint bishops to act as judges and arbiters concerning the questions which, having arisen in Africa, disturbed the peace of the Church. This having been done, Cæcilianus and those who had sailed from Africa to accuse him being present, and the case tried by Melchiades, who was then Bishop of Rome, along with the assessors whom at the request of the Donatists the Emperor had sent, nothing could be proved against Cæcilianus; and thus, while he was confirmed in his episcopal see, Donatus, who was present as his opponent, was condemned. After all this, when they all still persevered in the obstinacy of their most sinful schism, the Emperor being appealed to, took pains to have the matter again more carefully examined and settled at Arles. They, however, declining an ecclesiastical decision, appealed to Constantine himself to hear their cause. When this trial came on, both parties being present, Cæcilianus was pronounced innocent, and they retired vanquished; but they still persisted in the same perversity. At the same time the case of Felix of Aptunga was not forgotten, and he too was acquitted of the crimes laid to his charge, after an investigation by the proconsul at the order of the same prince.
5. Since, however, I was only saying these things, not reading from the record, I seemed to you to be doing less than my earnestness had led you to expect. Perceiving this, I sent at once for that which I had promised to read. While I went on to visit the Church at Gelizi, intending to return thence to you, all these Acts were brought to you before two days had passed, and were read to you, as you know, so far as time permitted, in one day. We read first how Secundus of Tigisis did not dare to depose his colleagues in office who confessed themselves to be traditors; but afterwards, by the help of these very men, dared to condemn, without their confessing the crime, and in their absence, Cæcilianus and others who were his colleagues. And we next read the proconsular Acts in which Felix was, after a most thorough investigation, proved innocent. These, as you will remember, were read in the forenoon. In the afternoon I read to you their petition to Constantine, and the ecclesiastical record of the proceedings in Rome of the judges whom he appointed, by which the Donatists were condemned, and Cæcilianus confirmed in his episcopal dignity. In conclusion, I read the letters of the Emperor Constantine, in which the evidence of all these things was established beyond all possibility of dispute.
Source: Letters (New Advent)