It is then obvious that "Gatsby bought that house so that Daisy would be right across the bay" (83). The "green light" that Gatsby was holding his arms out to was at the end of Daisy's dock, therefore the "green light" symbolizes Daisy in the eyes of Gatsby. Gatsby's effort to find Daisy and subsequently his purchase of a home that is across the bay from her house shows his pursuit of Daisy and his desire to reunite with her. The "green light" symbolizes Daisy, far from Gatsby but in his sight, leading him onward through life--giving him a point of reference to judge his accomplishments. Though Fitzgerald uses the "green light" to symbolize Daisy, he also uses it to symbolize the money that Daisy requires.
Secondly, Fitzgerald uses the "green light" to symbolize money and its importance to Gatsby. Gatsby tries to fulfill his dream of reuniting with Daisy, but because of his heritage or lack of heritage he encounters some obstacles. Daisy was born into the elite class of society, where as Gatsby was born to "shiftless and unsuccessful farm people" (104). When Gatsby first met Daisy he quickly realized that his enlistment in the army granted him a means of hiding his background. Gatsby was a "penniless young man without a past" who led Daisy to "believe that he was a person from much the same strata "that he was fully able to take care of her" (156). Gatsby carefully hid behind his uniform to conceal the truth. Fitzgerald makes the difference between Daisy and Gatsby clear when he says, " She vanished into her rich house, into her rich, full life, leaving Gatsby "nothing" (157). It is clear that Daisy enjoys a large amount of wealth, but its importance to Daisy only becomes clear when Fitzgerald's reveals her motives for marrying Tom. Daisy desired a husband and she desired that "the decision be made by some force "of love, of money, of unquestionable practicality" (159).