Don't wear slippers or dressing-gown or smoking-jacket out of your own room.
Don't sink your hands in your trousers' pockets.
Don't whistle in public places, nor inside houses either.
Don't use your fingers or fists to beat a tattoo upon floor, desk or window panes.
Don't bring a smell of spirits or tobacco into the presence of ladies.
Don't chew tobacco; of all habits, it is possibly the nastiest.
Don't drink spirits; or, if you must drink, don't do it during business hours.
Don't examine other people's papers or letters scattered on their desks or tables, even in their presence.
V.—In Your Speech.
DON'T use elegant to mean everything that pleases you.