Whoever does not want to know the will of God is mentally walking a path next to a cliff, and easily falls with any wind. If he is praised, he is proud. If he is rebuked he is angry. If he eats pleasant food, he is drawn into bodily passions. When he suffers he weeps. When he knows something, he wants to show that he knows. When he doesn’t understand, he pretends to understand. When he is rich he puts on airs. When he is poor, he is a hypocrite. When he is full, he is bold. When he fasts he is vainglorious. When he is denounced he loves to argue, while he looks on those who forgive him as fools.
—St. Mark the Ascetic