The document summarizes themes of marriage in Jane Austen's novel Sense and Sensibility. It discusses how Austen uses marriage as a central plot device and explores different types of marriages, including marriages for love versus economic necessity. It provides examples of marriages between characters like Elinor/Edward who marry for love despite financial obstacles, versus Marianne/Willoughby who do not marry because Willoughby chooses a wealthy woman for financial reasons. The document also examines how the novel portrayed women's need to marry well for social standing and financial security.