The central trait of sociopathy is a complete lack of conscience, which is very difficult for most people to get their heads around, because those of us who do have a conscience can't really imagine what it would be like if we didn't. Most people think that deep down everybody has a conscience, and it turns out that's just not true.

Sociopaths are not usually physically violent. A typical sociopath never kills anybody and doesn't look like Charles Manson - they look like you and me and everybody else. You're not looking for someone who's recognizably evil or scary-looking, but rather someone who looks normal. Another lynchpin is dishonesty. Lying for the sake of lying. Lying just to see whether you can trick people. And sometimes telling larger lies to get larger effects.

Controlling others—winning—is more compelling than anything (or anyone) else.

The bottom line for most people who are normal is their need for other people. Even the greedy ones have this need - as long as they're not sociopathic. They may be very misguided and unhappy and do bad things and so forth, but in general if you look down deep, you find that these people are mainly concerned with other people and what other people think of them.

I saw a werewolf drinking a pina colada at Trader Vic's. His hair was perfect.

I think con man is the usual term. When somebody comes on television to tell a lot of needy people that God will send them to heaven if they send him $200, if that's not downright sociopathic, it's close.

The ultimate manipulation is to kill someone, and sociopathy is murderous in a psychological sense - there's a kind of soul-murder going on.