Anglo-Saxons are most likely descendants of Roman recruits from continent. Not like some people imagined some kind of brutal aggressive invaders. Because of such selective recruits, English are famous for civility among all Europeans. They have the best anger control and least confrontational (except soccer hooligans). They are least emotional and also most obedient Caucasians. In other word, English are the most introverted people among all Europeans. Typical English dislike anger. They consider anger as disgrace. Such incredible civilized behaviors are result of selection by Roman commanders. At end, they are even more `civilized' than the original countries.
Certainly, most Barbarians have anger control problems.