Marcel Proust was, from his earliest youth until his death in 1922, a meticulous and prolific correspondent: he wrote to relatives, family, friends, defenders of his work and even his biggest detractors. In the thousands of letters he sent, in which the register and style are masterfully adapted to the recipient, he deals with the most varied topics, memories and intimate confessions, impressions about readings, negotiations with his publishers, comments on current politics, which subtly outline many of the episodes and reasons that would feed his magnum opus, In Search of Lost Time. This selection brings together close to two hundred letters written by Proust from adolescence to his last days, thus offering a vivid portrait of the writer, his world and his time.