A Commentary on the Last Three Paragraphs of "The Great Gatsby"

This passage is the last three paragraphs of the story. The passage is Nick's thoughts on Gatsby and the future. This passage ends the story and concludes Nick's narrative. It happens while Nick is going home to Minnesota in a train. It illustrates the main theme of the un-attainability of the American Dream.
In the first sentence of the passage, Fitzgerald uses the word "brooding" to show the mood of Nick, the narrator. Brooding gives an impression of deep, dark thinking. …