Etiquette is about all of human social behavior. Behavior is regulated by law when etiquette breaks down or when the stakes are high - violations of life, limb, property and so on. Barring that, etiquette is a little social contract we make that we will restrain some of our more provocative impulses in return for living more or less harmoniously in a community.
Judith MartinIt is a widespread and firm belief among guests that their departure is always a matter of distress to their hosts, and that in order to indicate that they have been pleasantly entertained, they must demonstrate an extreme unwillingness to allow the entertainment to conclude. This is not necessarily true.
Judith MartinWhat you have when everyone wears the same playclothes for all occasions, is addressed by nickname, expected to participate in Show And Tell, and bullied out of any desire form privacy, is not democracy; it is kindergarten.
Judith MartinAllowing an unimportant mistake to pass without a comment is a wonderful social grace ... Children who have the habit of constantly correcting should be stopped before they grow up to drive spouses and everyone else crazy by interrupting stories to say, 'No, dear -- it was Tuesday, not Wednesday.
Judith Martin