Monsieur Arnoux is a character from the novel "Sentimental Education" by Gustave Flaubert. He is a wealthy and influential art dealer in 19th-century France, known for his passion for art and his connections within the artistic community. Arnoux represents the bourgeois class and embodies the complexities of love and ambition. Throughout the story, Monsieur Arnoux becomes a central figure in the life of the protagonist, Frédéric Moreau. His interactions with Frédéric highlight themes of desire, aspiration, and the challenges of navigating social relationships in a changing society. Arnoux's character serves as a reflection of the era's cultural dynamics.