Situated at the end of Daisy’s East Egg dock and barely visible from Gatsby’s West Egg lawn, the green light represents Gatsby’s hopes and dreams for the future. Gatsby associates it with Daisy, and in Chapter 1 he reaches toward it in the darkness as a guiding light to lead him to his goal. Because Gatsby’s quest for Daisy is broadly associated with the American dream, the green light also symbolizes that more generalized ideal.
East and West
the valley of ashes between West Egg and New York City consists of a long stretch of desolate land created by the dumping of industrial ashes. It represents the moral and social decay that results from the uninhibited pursuit of wealth, as the rich indulge themselves with regard for nothing but their own pleasure. The valley of ashes also symbolizes the plight of the poor
The eyes of Doctor T. J. Eckleburg are a pair of fading, bespectacled eyes painted on an old advertising billboard over the valley of ashes. They may represent God staring down upon and judging American society as a moral wasteland, though the novel never makes this point explicitly.
East Egg is what was known as "old money". These were the people that had inherited wealth. Aristocracy and good taste were reflected in them. "New Money" were the people of West Egg. They were those that had recently found riches in the booming economy, or illegal dealings, of the Jazz age. They were often associated with garishness and gaudy things.
The Jazz Age was a time when people partied without restraint. It highlights people's perception of the 20's vs. the reality of it. The nights began beautifully, but ended in drunkenness and fighting.
the Character himself is representative of the American Dream. He starts out trying to pursue the American idea of success in order to woo the sweetheart of his youth, Daisy. But what started out simple quickly took a turn for the worst. His love for Daisy led him to change his identity and do whatever was necessary to achieve his wealth and status. This shows how the American Dream, which was started out as a good intention, was eventually perverted in the 20's.