The world of the sociopath...

...People with this disorder appear to be charming at times, and make relationships, but to them, these are relationships in name only. They are ended whenever necessary or when it suits them, and the relationships are without depth or meaning, including marriages. They seem to have an innate ability to find the weakness in people, and are ready to use these weaknesses to their own ends through deceit, manipulation, or intimidation, and gain pleasure from doing so.

They appear to be incapable of any true emotions, from love to shame to guilt. They are quick to anger, but just as quick to let it go, without holding grudges. No matter what emotion they state they have, it has no bearing on their future actions or attitudes...

From: http://www.mcafee.cc/Bin/sb.html
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...Despite this emotional deficiency, most psychopaths learn to mimic the appearance of normal emotion well enough to fit into ordinary society, not unlike the way that the hearing impaired or illiterate learn to use other cues to compensate for their disabilities. As Hare describes it, psychopaths “know the words but not the music.” One might imagine that such a false and superficial front would be easily penetrated, but such is rarely the case, probably because of the assumption we all tend to make that others think and feel essentially the same way as ourselves. Differences in culture, gender, personality, and social status all create empathy gaps that can seem almost unfathomable, but none of these is as fundamental a divide as the one that exists between an individual with a conscience and one without. The psychopath’s psychology is so profoundly alien to most people that we are unable to comprehend their motives, or recognize one when we see one. Naturally, the industrious psychopath will find this to his advantage...

From: http://www.damninteresting.com/the-unburdened-mind
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The serial bully:

• is emotionally retarded with an arrested level of emotional development; whilst language and intellect may appear to be that of an adult, the bully displays the emotional age of a five-year-old
• is emotionally immature and emotionally untrustworthy
• exhibits unusual and inappropriate attitudes to sexual matters, sexual behaviour and bodily functions; underneath the charming exterior there are often suspicions or hints of sex discrimination and sexual harassment, perhaps also sexual dysfunction, sexual inadequacy, sexual perversion, sexual violence or sexual abuse
• in a relationship, is incapable of initiating or sustaining intimacy
• holds deep prejudices (eg against the opposite gender, people of a different sexual orientation, other cultures and religious beliefs, foreigners, etc - prejudiced people are unvaryingly unimaginative) but goes to great lengths to keep this prejudicial aspect of their personality secret...
  

From: http://www.bullyonline.org/workbully/serial.htm