The way to Christ is first through humility, second through humility, and third through humility. If humility does not precede and accompany and follow every good work we do, if it is not before us to focus on, it it is not beside us to lean upon, if it is not behind us to fence us in, pride will wrench from our hand any good deed we do at the very moment we do it.
Saint AugustineSamson crushed himself and his enemies to death beneath the ruins of a building. He can only be excused on the grounds that the Spirit of the Lord, who wrought miracles through him, had bidden him to do so. But, apart from such men excepted by the command of a just law in general or of God, the very Source of justice, in a special case, any one who kills a human being, himself or another, is guilty of murder.
Saint AugustineGod suffers not the pain of repentance, nor is He deceived in any matter, so that He would wish to correct that wherein He has erred. But as when a man repents of anything, he wishes to change what he has done; thus where you hear that God repents, look for an actual change. God does it differently from you, although He calls it by the name of repentance; for thou dost it, because you had erred; while He does it, because He avenges, or frees.
Saint Augustine