Let there always be a preponderance of mercy with you, even though you don't feel such mercy in yourself, as God has for the world ... A cruel and merciless heart is never purified. A merciful man is the doctor of his own soul, because as it were a by a strong wind from is heart he drives out the darkness of the passions.
Isaac of NinevehBe persecuted, rather than be a persecutor. Be crucified, rather than be a crucifier. Be treated unjustly, rather than treat anyone unjustly. Be oppressed, rather than be an oppressor. Be gentle rather than zealous. Lay hold of goodness, rather than justice.
Isaac of NinevehWithout temptations, it is not possible to learn the wisdom of the Spirit. It is not possible that Divine love be strengthened in your soul. Before temptations, a man prays to God as a stranger. When temptations are allowed to come by the love of God, and he does not give in to them, then he stands before God as a sincere friend. For in fulfilling the will of God, he has made war on the enemy of God and conquered him.
Isaac of NinevehThe beginning of divine wisdom is clemency and gentleness, which arise from greatness of soul and the bearing of infirmities.
Isaac of NinevehHumility collects the soul into a single point by the power of silence. A truly humble man has no desire to be known or admired by others, but wishes to plunge from himself into himself, to become nothing, as if he had never been born. When he is completely hidden to himself in himself, he is completely with God
Isaac of Nineveh