Maximus the Confessor Quote
But I say to you, the Lord says, love your enemies, do good to those who hate you, pray for those who persecute you. Why did he command these things? So that he might free you from hatred, sadness, anger and grudges, and might grant you the greatest possession of all, perfect love, which is impossible to possess except by the one who loves all equally in imitation of God.
Maximus Confessor: Selected Writings (ed. Paulist Press, 1985) - ISBN: 9780809126590