Japanese naval officers in dress whites are frequent guests at Pearl Harbor's officers' mess and are very polite. They always were. Except, of course, for that little interval there between 1941 and 1945. ↗
The nerves are a problem on trumpet, because when you mess up everyone can hear it. Just remember most people are too polite to say anything about it. That should calm your nerves. ↗
Sometimes if you have very confident people, you have to tell them please, be polite, there are other players are good enough as you and you should never speak out of an orchestra. ↗
Years ago, I was performing, and people kept calling out for 'Puppy Love' and I just didn't want to. Then I thought I'd have some fun, so we did this insane heavy metal version of it. The applause was polite. ↗
The ability to compromise is not a diplomatic politeness toward a partner but rather taking into account and respecting your partner's legitimate interests. ↗
In truth, politeness is artificial good humor, it covers the natural want of it, and ends by rendering habitual a substitute nearly equivalent to the real virtue. ↗