I'm not what you'd call a fearless type of person.

We have to understand how the extremists got the way they are. Without that kind of understanding, we'd never really get to know them. I put in nothing about their childhoods. But what I have put in is stuff about the weird symbiotic relationship between us and them.

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.

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.

Friends are the fruitcake of life - some nutty, some soaked in alcohol, some sweet.

Trying to prove you’re not a psychopath is even harder than trying to prove you’re not mentally ill,’ said Tony.

I have thought sometimes that the sanest people, the people who are just very balanced, very happy, are probably lower achieving than other people. My kind of irrationality happens to be fear or anxiety.