The first appearance of Gatsby has a solemnity, and Gatsby himself seems almost godlike: Nick speculates that Gatsby has "come out to determine what share of our local heavens [was his]." He is utterly alone, a solitary figure in a posture of mysterious worship. As the reader first being introduced to Gatsby, he is reaching toward the green light something that, by definition, he cannot grasp. In this scene, Fitzgerald wholly sacrifices realism in favor of drama and symbol: the green light stands for the as-yet-nameless object for which Gatsby is hopelessly striving.
The first chapter reveals how the characters are obsessed by class and privilege. Though Nick, like the Buchanans, comes from an elite background, the couple's relationship to their social position is entirely distinct to the narrator's. Tom Buchanan vulgarly exploits his status: he is grotesque, completely lacking redeeming features. His wife describes him as a "big, hulking physical specimen," and he seems to use his size only to dominate others. He has a trace of "paternal contempt" that instantly inspires hatred.