“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.”

“One should never make one's debut with a scandal. One should reserve that to give an interest to one's old age.”

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

“No woman should have a memory. Memory in a woman is the beginning of dowdiness. One can always tell from a woman's bonnet whether she has got a memory or not.”

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

“Never trust a woman who wears mauve, whatever her age may be, or a woman over thirty-five who is fond of pink ribbons.”