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

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

“Pray do! I think that whenever one has anything unpleasant to say, one should always be quite candid.”

“One should always be in love. That's the reason one should never marry.”

“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.”

“One should absorb the colour of life, but one should never remember its details. Details are always vulgar.”

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