There are 6 reasons that a person does anything: Love, faith, greed, boredom, fear... revenge.
Don't Judge a Girl by Her CoverMen go to far greater lengths to avoid what they fear than to obtain what they desire.
The Da Vinci CodeIf you are not extreme, then people will take shortcuts because they don't fear you.
The Devil in the Kitchen: Sex, Pain, Madness and the Making of a Great ChefI put fear into the eyes of a member of the Mafia. I’m doing well, she thought, now keep him scared.
Dangerous FlamesOne thing that shapes our behavior knowingly or unknowingly is fear
Distinctive Footprints of Life: Where Are You Heading Towards?