Sociopaths are often extremely charming. They are people who are better than you and me at charming people, at being charismatic. I've heard this more often than I can count: "He was the most charming man I ever met," or, "She was the sexiest woman I ever met," or, "The most interesting person I ever met . . ."

Sociopaths are not afraid of very much, except for physical harm and dying - really primitive, basic kinds of fears. The problem with being alone for a sociopath is boredom.

I am sure that if the devil existed, he would want us to feel very sorry for him.

The physical basis for sociopathy is approximately 50 percent inheritable, which sounds more dramatic than it probably is, because most personality characteristics that psychologists test for and study the genetics of are about 50 percent inheritable. Introversion, extroversion, it turns out that they're about 50 percent inheritable, which means that somehow sociopathy is physical, it's organic.

When you were a child, where boredom could actually get to be painful. Sociopaths experience that kind of pain in boredom. And so to be alone, to have nobody to play the game with, can be painful. It's not exactly fear, it's a kind of pain.

Another thing that's fun for sociopath is speed, literal speed, going very fast in your car. Not that everybody who goes fast in their car is a sociopath, by any means, but anything that gives you a rush will lessen your sense of boredom.

Sociopathy is the inability to process emotional experience, including love and caring, except when such experience can be calculated as a coldly intellectual task.