I'm not sure whether being extremely intelligent and a fairly hard worker counts as a problem, although in some circumstances it can be. At worst one can say he has a short fuse, which is a matter of temperament, and can be quite picky and sometimes about the wrong things. His mind does operate at a fairly intense level for long periods of time, and many people can find that tiring. He occassionally gets matters of historically fact only "kinda sorta" correct.

Most of the time his knowledge and logic is interesting, insightful and with practical import.

I'm also fairly sure he doesn't mind me making these comments in the least ;-)

Nobody has a perfect personality, but at least some people are sincerely trying to make themselves better people; more honest, more considerate, more thoughtful of the feelings of others.

The antithesis is those who engage in antisocial behaviour and when asked for a reason for their behaviour say they were doing it "for fun", are the real problem.

Not only are they aware that their behaviour is wrong, but they deliberately and wilfully continue to engage in that fashion.

That, in my considered opinion, is the true definition of an arsehole.