“We aren't all good people just trying to do good. Some of us are psychopaths. And psychopaths are to blame for this brutal, mis-shapen society.”

“I wondered if sometimes the difference between a psychopath in Broadmoor and a psychopath on Wall Street was the luck of being born into a stable, rich family.”

“The killer's name was Michael Stone and he was a known psychopath. He had previous convictions. But the law stated that only patients whose mental disorders were considered treatable could be detained beyond their prison sentences. Psychopaths were considered untreatable and so Michael Stone had to be free.”

“Justice departments and parole boards all over the world have accepted his contention that psychopaths are quite simply incurable and everyone should concentrate their energies instead on learning how to root them out using his PCL-R Checklist, which he has spent a lifetime refining. His was not the only psychopath checklist around, but it was by far the most extensively used.”

“I heard a story about her once,' said James. 'She was interviewing a psychopath. She showed him a picture of a frightened face and asked him to identify the emotion. He said he didn't know what the emotion was but it was the face people pulled just before he killed them.”

“I am the neurological opposite of a psychopath, in that I feel anxious almost all the time. It must be great to not constantly feel like you’ve got someone living inside your face, shooting you with a mini Taser.”

“At the end of our conversation she (Martha Stout) turned to address you, the reader. She said if you're beginning to feel worried that you may be a psychopath, if you recognize some of those traits in yourself, if you're feeling a creeping anxiety about it, that means you are not one.”