Evil is not committed by people who feel uncertain about their righteousness, who question their own motives, who worry about betraying themselves.  The evil in this world is committed by the Pharisees of our own day, the self-righteous who think they are without sin because they are unwilling to suffer the discomfort of self-examination.  The evil hate the light—the light of goodness that shows them up, the light of scrutiny that exposes them, the light of truth that penetrates their deception.”

M. Scott Peck, People of the Lie