A certain brother came to Abbot Poemen and said: What ought I to do, father? I am in great sadness. The elder said to him: Never despise anybody, never condemn anybody, never speak evil of anyone, and the Lord will give you peace.
--Verba Seniorum [Words of the Elders], written in Greek about the early Christian hermits of the Middle East, translated into Latin in the mid-500s. From Wisdom of the Desert (pub.1960), tr. by Thomas Merton (1915-1968).