And so, we realize that a just person is not without some sins. But there is one remedy which enables us to keep alive. For God, our Master, told us to say in our prayers: “Forgive us the wrong we have done as we forgive those who wrong us.” It is human to be angry, but I wish it were impossible…God spares you; spare others likewise; make up and seek reconciliation with them. But suppose you want reconciliation and the other person does not want it. That is enough for you; you have something to grieve for, you have freed yourself. If you want agreement and that person refuses, say confidently: “Forgive us the wrong we have done as we forgive those who wrong us.”

—Caesarius, Bishop of Arles, Sermon on Fraternal Harmony 1-2