But then he told himself: What does it really mean to be useful? Today's world, just as it is, contains the sum of the utility of all people of all times. Which implies: The highest morality consists in being useless.

The greater the ambiguity, the greater the pleasure.

Unlike the puerile loyalty to a conviction, loyalty to a friend is a virtue - perhaps the only virtue, the last remaining one.

Speak truth to power.

...she merely wished to find a way out of the maze. She knew that she had become a burden to him: she took things too seriously, turning everything into a tragedy, and failed to grasp the lightness and amusing insignificance of physical love. How she wished she could learn lightness! She yearned for someone to help her out of her anachronistic shell.

You can't measure the mutual affection of two human beings by the number of words they exchange.

A great deal has been said about love at first sight; I am perfectly aware of love's retrospective tendency to make a legend of itself, turn its beginnings into myth; so I don't want to assert that it was love; but I have no doubt there was a kind of clairvoyance at work: I immediately felt, sensed, grasped the essence of Lucie's being or, to be more precise, the essence of what she was later to become for me; Lucie had revealed herself to me the way religious truth reveals itself.