Medicine being a compendium of the successive and contradictory mistakes of medical practitioners, when we summon the wisest of them to our aid, the chances are that we may be relying on a scientific truth the error of which will be recognized in a few years time.

Illness is the doctor to whom we pay most heed; to kindness, to knowledge, we make promise only; pain we obey.

There is no more ridiculous custom than the one that makes you express sympathy once and for all on a given day to a person whose sorrow will endure as long as his life. Such grief, felt in such a way is always present, it is never too late to talk about it, never repetitious to mention it again.

After a certain age our memories are so intertwined with one another that what we are thinking of, the book we are reading, scarcely matters any more. We have put something of ourselves everywhere, everything is fertile, everything is dangerous, and we can make discoveries no less precious than in Pascal's Pensées in an advertisement for soap.

A certain similarity exists, although the type evolves, between all the women we love, a similarity that is due to the fixity of our own temperament, which it is that chooses them, eliminating all those who would not be at once our opposite and our complement, fitted that is to say to gratify our senses and to wring our heart.

Adultery breathes new life into marriages which have been left for dead.

We pack the physical outline of the creature we see with all the ideas we have already formed about him, and in the complete picture of him we compose in our minds those ideas have certainly the principal place.