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.

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.

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

I would hesitate to tell people to stop being kind or sympathetic to sociopath. But just like loyalty, some things that can be taken advantage of are empathy, sympathy, and our tendency to pity somebody when something has gone wrong in their life.

Conscience is the still small voice that has been trying since the infancy of our species to tell us that we are evolutionarily, emotionally, and spiritually One, and that if we seek peace and happiness, we must behave that way.

I am not allowed by my profession to diagnose somebody from a distance, but one can observe certain symptoms of sociopathy in George W. Bush.

If you have reached the point where you're certain that person has no conscience, or is in it to win rather than to love you, then the very best thing you can do is to get away. That's a very hard lesson to learn, and, furthermore, it's not always possible.