Conscience is a creator of meaning. As a sense of constraint rooted in our emotional ties to one another, it prevents life from devolving into nothing but a long and essentially boring game of attempted dominance over our fellow human beings, and for every limitation conscience imposes on us, it gives us a moment of connectedness with an other, a bridge to someone or something outside of our often meaningless schemes.

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.

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.

Even famous people - are most concerned of all with what people who are close to them think. And the sociopath is generally not concerned with that at all.

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.

A conscience is, for a while anyway, pretty easy to fake.

To learn to be charming is fairly easy - you can teach somebody to be charming and to learn human emotions - or to learn the behaviors that go with human emotions. A sociopath, a smart one, will study the way we emote, and will learn how to do that quite effectively.