The moral development of Nick Carraway is thematically relevant to the story progression of "The Great Gatsby." His narration represents his moral standing, with the goal of preserving a saved portion of events and dependability. Nick expertly hooks the reader's sympathies, avoiding any one assumption. Throughout the novel, he demonstrates a growth in wisdom and virtue. It is Nick who changes the most as the story progresses. He starts out as a naive young man who loves jazz music, cool clothes, and luxury cars. However, through personal experience and observation, he learns what it means to be human. This evolution makes him more reliable as an narrator and helps him understand various social issues of the time period. Other characters that change the most are Jay Gatsby, the main character; Daisy Buchanan, Gatsby's love interest; and Tom Buchanan, Daisy's husband. All three people go through transformation from beginning to end. Jay Gatsby becomes a hero after sacrificing everything for love; Daisy learns humility after being exposed to reality; and Tom turns into a bitter man after discovering his wife's affair. Additionally, the setting of the novel changes too. At the beginning, New York City is presented in a good light, but this image is soon shattered by the evil actions of Jay Gatsby. After his murder, Gatsby's former kingdom is destroyed completely, while the world outside his mansion remains unchanged.