"They consistently engage in antisocial behavior which includes destroying people's lives, in order to feed their inflated egos. During this process they frequently enjoy mocking their targets, which they see as weak, or are envious of. They will inflict pain upon others for no reason other than the enjoyment of doing so. They span all levels of society. Some authors consider them to be a different species of humans." http://www.thehiddenevil.com/psychopathy.asp