“One should never make one's debut with a scandal. One should reserve that to give an interest to one's old age.”
“No one should be alone in their old age, he thought.”
“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 worry. One should always plan.”
“Either one does not dream, or one does so interestingly. One should learn to spend one's waking life in the same way: not at all, or interestingly.”
“One should always be in love. That's the reason one should never marry.”