26 These things, dearest brother, I have briefly written to you, according to my abilities, prescribing to none, and prejudging none, so as to prevent any one of the bishops doing what he thinks well, and having the free exercise of his judgment. We, as far as in us lies, do not contend on behalf of heretics with our colleagues and fellow bishops, with whom we maintain a divine concord and the peace of the Lord; especially since the apostle says, “If any man, however, is thought to be contentious, we have no such custom, neither the Church of God.” Charity of spirit, the honour of our college, the bond of faith, and priestly concord, are maintained by us with patience and gentleness. For this reason, moreover, we have with the best of our poor abilities, with the permission and inspiration of the Lord, written a treatise on the “Benefit of Patience,” which for the sake of our mutual love we have transmitted to you. I bid you, dearest brother, ever heartily farewell.
Source: The Epistles of Cyprian (New Advent)