One cannot change, that is to say become a different person, while continuing to acquiesce to the feelings of the person one has ceased to be. - Marcel Proust

A man is not more entitled to be "received in good society," or at least to wish to be, because he is more intelligent and cultivated. This is one of those sophisms that the vanity of intelligent people picks up in the arsenal of their intelligence to justify their basest inclinations. In other words, having become more intelligent creates some rights to be less. Very simply, diverse personalities are to be found in the breast of each of us, and often the life of more than one superior man is nothing but the coexistence of a philosopher and a snob. Actually, there are very few philosophers and artists who are absolutely detached from ambition and respect for power, from "people of position." And among those who are more delicate or more sated, snobism replaces ambition and respect for power in the same way superstition arises on the ruins of religious beliefs. Morality gains nothing there. Between a worldly philosopher and a philosopher intimidated by a minister of state, the second is still the more innocent.

"For a long time I used to go to bed early. Sometimes, when I had put out my candle, my eyes would close so quickly that I had not even time to say "I'm going to sleep." And half an hour later the thought that it was time to go to sleep would awaken me; I would try to put away the book which, I imagined, was still in my hands, and to blow out the light; I had been thinking all the time, while I was asleep, of what I had just been reading, but my thoughts had run into a channel of their own, until I myself seemed actually to have become the subject of my book: a"

There can be no peace of mind in love, since what one has obtained is never anything but a new starting point for further desires.

in a chapter called Desire and Despair