As soon as jealousy is discovered, it is regarded by the person who is its object as a challenge which justifies deception.

... seeking to indicate to her by the extent of his gratitude the corresponding intensity of the pleasures which it was in her power to bestow on him, the supreme pleasure being to guarantee him immunity, for as long as his love should last and he remain vulnerable, from the assaults of jealousy.

At that time, he was satisfying a sensual curiosity by experiencing the pleasures of people who live for love. He had believed he could stop there, that he would not be obliged to learn their sorrows; how small a thing her charm was for him now compared with the astounding terror that extended out from it like a murky halo, the immense anguish of not knowing at every moment what she had been doing, of not possessing her everywhere and always!

Then his jealousy rejoiced at the discovery, as though that jealousy had had an independent existence, fiercely egotistical, gluttonous of every thing that would feed its vitality, even at the expense of Swann himself.

His jealousy, like an octopus which throws out a first, then a second, and finally a third tentacle, fastened itself irremovably first to that moment, five o'clock in the afternoon, then to another, then to another again. But Swann was incapable of inventing his sufferings. They were only the memory, the perpetuation of a suffering that had come to him from without.

Car ce que nous croyons notre amour, notre jalousie, ce n'est pas une même passion continue, indivisible. Ils se composent d'une infinité d'amours successifs, de jalousies différentes et qui sont éphémères, mais par leur multitude ininterrompue donnent l'impression de la continuité, l'illusion de l'unité.

In the case of Albertine, I felt that I should never discover anything, that, out of that tangled mass of details of fact and falsehood, I should never unravel the truth: and that it would always be so, unless I were to shut her up in prison (but prisoners escape) until the end.

Quando Odette deixasse de ser para ele uma criatura sempre ausente, cobiçada, imaginária, quando o sentimento que ele tinha por ela não fosse mais aquela mesma perturbação misteriosa que lhe causava a frase da sonata e sim afeto, reconhecimento, quando se estabelecessem entre ambos relações normais que poriam fim à loucura e à tristeza dele, então sem dúvida os atos da vida de Odette lhe pareceriam si mesmos pouco interessantes.