"The Big and the Small World" is a novel by the famous French writer Honore de Balzac. In this book, the author talks about the life of the aristocracy and the bourgeoisie in the 19th century, showing the contradictions between these worlds. The main character, Jean Breteuil, feels the influence of different social classes on himself, which leads him to mental confusion and internal contradictions. The novel "Big and Small World" is a reflection of the complex relations between people and society of that time, as well as the author's view of the problems of society and morality.