There has always been and still are discussions and study about different concepts and clarification of their meanings. Among these topics, we come across topics which are indicative of various interpretations and sometimes pose an incongruity in definition of speech forms like humor, joke, fun, satire. These terms are used together and sometimes replaced in such a way that it seems they have the same meaning and are equivalents, while each one has its own manifestation of speech, and they are indicative of the writer's viewpoints, toughts and purposes.In the present article we shall study the application of humor in Marcel Proust's immortal work, Remembrance of Times Past, and mark this delicate, favorable and perhaps unknown characteristic of his novel. In order to display this, various examples will be presented. On the one hand we will set about the role of the narrator's feelings and sympathy for few characters of the story, which are influential in the creation of humor, and on the other hand, we will show the reflections of this favored speech form on Proust's writing style. Analysis of the sweet, delicate and attractive form of the writer's humor is the main axis of the article, in order to exhibit how this skilful writer with his artistic talent and clever nature, covers his novel with beautiful and suitable jewels for expressing his delicate thoughts.