If you cannot close the mouth of one who reviles his brother, at least avoid conversation with him.
Isaac of NinevehThe prayer of one who does not consider himself a sinner is not accepted by the Lord.
Isaac of NinevehIf 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 NinevehThe wisdom of the Holy Spirit is much greater than the wisdom of the entire world. Within the wisdom of the Holy Spirit, silence prevails; the wisdom of the world, however, goes astray into idle talk.
Isaac of NinevehLet them push you, but do not push; Let them crucify you, but do not crucify. Let them insult, but do not insult. Let them slander, but do not slander. Be meek, and do not be zealous in evil.
Isaac of NinevehNo one can sense his own weakness is at least a small temptation is not allowed to afflict either his body or his soul. Then, comparing his weakness to the help of God, a man comes to know its magnitude. But whoever does not know that he needs God's help, let him make many prayers. Insofar as he multiplies them, in that measure will he be humbled.
Isaac of Nineveh