Don’t be deceived by the vain thought that righteous vengeance has no guilt, as the surrender to the law of the one who has transgressed.
Our own laws are gentle and merciful, and they don’t allow us to deal angrily with those who wrong us; let us stick to them and follow them.
Thus, we shall offer little (because our life here is short and deserves nothing), but we shall receive from God a great reward, his charity and heavenly hopes.
St. Gregory the Theologian