A violent vindictive psychopath is one who will beat people up for no apparent reason, and then, will often make up stories about how it was their victims fault, or that nothing actually happened.
Usually they end up beating up their wives/girlfriends, and often they have violent tempers which many people around them don't know about.
A person who spends time exploringthe universe right inside their own head. Usually with drugs/yoga/meditation. This person is on a quest to discover the self, and usually can be considered "realists".