“One should never do anything that one cannot talk about after dinner.”

“I should fancy, however, that murder is always a mistake. One should never do anything that one cannot talk about after dinner.”

“If it was my business, I wouldn't talk about it. It is very vulgar to talk about one's business. Only people like stockbroker's do that, and then merely at dinner parties.”

“If there is anything more annoying in the world than having people talk about you, it is certainly having no one talk about you.”

“After a good dinner one can forgive anybody, even one's own relations.”

“One should never give a woman anything she can't wear in the evening.”

“One should never trust a woman who tells one her real age. A woman who would tell one that would tell one anything.”