“Only God is good by nature, but with God’s help man can become good through careful attention to his way of
life. He transforms himself into what he is not when his soul, by devoting its attention to true delight, unites itself to God, in so far as its energized power desires this. For it is written: ‘Be good and merciful as is your Father in heaven’ (cf. Luke 6:36; Matt. 5:48).”

St. Diadochos of Photiki