The only occasion when the traditions of courtesy permit a hostess to help herself before a woman guest is when she has reason to believe the food is poisoned.
Emily PostWhenever two people come together and their behavior affects one another, you have etiquette.
Emily PostThe honor of a gentleman demands the inviolability of his word, and the incorruptibility of his principles. He is the descendent of the knight, the crusader; he is the defender of the defenseless and the champion of justice--or he is not a gentleman.
Emily PostGood manners reflect something from inside-an innate sense of consideration for others and respect for self.
Emily PostPeople who picnic along the public highway leaving a clutter of greasy paper and swill (not a pretty name, but neither is it a pretty object!) for other people to walk or drive past, and to make a breeding place for flies, and furnish nourishment for rats, choose a disgusting way to repay the land-owner for the liberty they took in temporarily occupying his property.
Emily Post