"In a dangerous social environment it's not obvious that being an extroverted person is a good idea. Because extroverted people, they stand out. Especially if they are extroverted and creative. Because not only are they noisy and dominant and assertive, they are also colorful and flamboyant and provocative. Well that's great if your are in a society that rewards that sort of thing, but if you are ruled by an authoritarian king, who wants absolutely no threat whatsoever to his stability ever, then dressing in grey and shutting the hell up is a really good survival tactic."