The central theme of the passage you provided from The Great Gatsby is the pursuit of the American Dream can lead to disillusionment. This theme is developed as Gatsby’s relentless hope and pursuit of an ideal future, symbolized by his dreams of wealth, status, and ultimately winning back Daisy, ultimately lead to his tragic end.
Throughout the novel, Gatsby embodies the notion of the American Dream, striving for a better life and a brighter future. His extraordinary gift of hope is contrasted with the reality of his circumstances and the moral decay of the society around him. Despite his great wealth and the lavish parties he throws, Gatsby remains fundamentally unfulfilled, as his dream is tied to a romanticized version of the past and the illusion of love with Daisy. The inevitable collapse of Gatsby's dream, brought on by his inability to escape the social divides and the harsh truths of the world, reflects a broader commentary on the disillusionment that can accompany the pursuit of the American Dream. The ideal that Gatsby chases is shown to be ultimately unattainable and leads to his downfall.