We are all born charming, fresh, and spontaneous and must be civilized before we are fit to participate in society.
Ideological differences are no excuse for rudeness.
The invention of the teenager was a mistake. Once you identify a period of life in which people get to stay out late but don't have to pay taxes - naturally, nobody wants to live any other way. Allowing an unimportant mistake to pass without comment is a wonderful social grace. If you can't be kind, at least be vague. Scroll down for sources of quotations and special search engines.