“About one in twenty-five individuals are sociopathic, meaning, essentially, that they do not have a conscience. It is not that this group fails to grasp the difference between good and bad; it is that the distinction fails to limit their behavior. The intellectual difference between right and wrong does not bring on the emotional sirens and flashing blue lights, or the fear of God, that it does for the rest of us. Without the slightest blip of guilt or remorse, one in twenty-five people can do anything at all.”