A man who is truly humble is not troubled when he is wronged and he says nothing to justify himself against the injustice, but he accepts slander as truth; he does not attempt to persuade men that he is calumniated, but he begs forgiveness.
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 NinevehWhen you want to make a beginning of a good deed, first prepare for temptations, which will come to you, and don't doubt the truth of that which you do for God.
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 Nineveh