Manners are made up of trivialities of deportment which can be easily learned if one does not happen to know them.
Emily PostWhenever two people come together and their behavior affects one another, you have etiquette.
Emily PostNothing is less important than which fork you use. Etiquette is the science of living. It embraces everything. It is ethics. It is honor.
Emily PostTo be a good sportsman, one must be a stoic and never show rancor in defeat, or triumph in victory, or irritation, no matter what annoyance is encountered. One who can not help sulking, or explaining, or protesting when the loser, or exulting when the winner, has no right to take part in games or contests.
Emily Post