It is wrong to wear diamonds before luncheon, except on one’s marriage rings. Before, after, and during breakfast, luncheon and dinner, it is vulgar to wear a mixture of colored precious stones. It is always a comfort to know that so many things one can’t afford to do anyway are vulgar.

You can deny all you want that there is etiquette, and a lot of people do in everyday life. But if you behave in a way that offends the people you're trying to deal with, they will stop dealing with you...There are plenty of people who say, 'We don't care about etiquette, but we can't stand the way so-and-so behaves, and we don't want him around!' Etiquette doesn't have the great sanctions that the law has. But the main sanction we do have is in not dealing with these people and isolating them because their behavior is unbearable.

When people start hurling insults at you, you know their minds are closed and there's no point in debating. You disengage yourself as quickly as possible from the situation.

Shame is the proper reaction when one has purposefully violated the accepted behavior of society. Inflicting it is etiquette's response when its rules are disobeyed. The law has all kinds of nasty ways of retaliating when it is disregarded, but etiquette has only a sense of social shame to deter people from treating others in ways they know are wrong. So naturally Miss Manners wants to maintain the sense of shame. Some forms of discomfort are fully justified, and the person who feels shame ought to be dealing with removing its causes rather than seeking to relieve the symptoms.

There are three possible parts to a date, of which at least two must be offered: entertainment, food, and affection. It is customary to begin a series of dates with a great deal of entertainment, a moderate amount of food, and the merest suggestion of affection. As the amount of affection increases, the entertainment can be reduced proportionately. When the affection IS the entertainment, we no longer call it dating. Under no circumstances can the food be omitted.

If it's against state law, it's generally considered a breach of Etiquette.

Society cannot exist without etiquette ... It never has, and until our own century, everybody knew that.