> Plenty of geniuses have not treated people well. Newton was a complete asshole. Even Einstein ... wrote some rather unpleasant things about the Chinese in his personal journal. ... being a genius is no excuse for treating people poorly. But unfortunately history is littered with such people.
I suspect that many of these "geniuses" only became difficult personalities after they recieved recognition and had a taste for power. Power corrupts, it allows people to do things without regarding people that may be affected by their actions.
I don't think there's just a simple correlation between people deemed geniuses and them having difficult personalities. Rather, I suspect there's a causal effect between being granted the "genius" title and abusing the accompanying power that leads to a difficult personality.
