And always let your conscience be your guide...

Spotting a sociopath

Since everyone simply assumes that conscience is universal among human beings, hiding the fact that you are conscience-free is nearly effortless. You are not held back from any of your desires by guilt or shame, and you are never confronted by others for your cold-bloodedness. The ice water in your veins is so bizarre, so completely outside of their personal experience that they seldom even guess at your condition.