If you are truly merciful, then when what is yours is unjustly taken, don't be sad inside, and do not tell of our loss to your neighbor. Let a better loss, inflicted by those who insult you, be absorbed by your mercy.
Isaac of NinevehLet 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 NinevehThe Commandments of God are higher than all the treasures of the earth. Whoever has acquired them has received God within himself.
Isaac of NinevehIf you practice an excellent virtue without perceiving the taste of its aid, do not marvel; for until a man becomes humble, he will not receive a reward for his labor. Recompense is given, not for labor, but for humility.
Isaac of Nineveh