Madame Arnoux is a central character in Gustave Flaubert's novel, "Sentimental Education." She is depicted as an idealized woman, embodying beauty, grace, and virtue. Her presence significantly influences the protagonist, Frédéric Moreau, who is infatuated with her throughout the story. In the novel, Madame Arnoux is married to Monsieur Arnoux, a successful businessman. Despite her loyalty to her husband, she represents the unattainable love and aspirations of Frédéric. Her character reflects the themes of desire, social class, and the complexities of romantic relationships in 19th-century France.