[G]ood people are rarely suspicious: they cannot imagine others doing the things they themselves are incapable of doing; usually they accept the undramatic solution as the correct one, and let matters rest there.

Many psychopaths describe the traditional treatment programmes as finishing schools where they hone their skills. Where they find out that there are lots of techniques they had not thought about before.

There are certainly more people in the business world who would score high in the psychopathic dimension than in the general population. You'll find them in any organization where, by the nature of one's position, you have power and control over other people and the opportunity to get something.

All the reading in the world cannot immunize you from the devastating effects of psychopaths. Everyone, including the experts, can be taken in, conned, and left bewildered by them. A good psychopath can play a concerto on anyone's heart strings.

Measurement and categorization are, of course, fundamental to any scientific endeavor, but the implications of being able to identify psychopaths are as much practical as academic. To put it simply, if we can't spot them, we are doomed to be their victims, both as individuals and as a society.

Guilt?” he remarked in prison. “It’s this mechanism we use to control people. It’s an illusion. It’s a kind of social control mechanism—and it’s very unhealthy. It does terrible things to our bodies. And there are much better ways to control our behavior than that rather extraordinary use of guilt.