Chapter six of The Great Gatsby is mainly about the rumors surrounding Gatsby's occupation, Nick recounting Gatsby’s past, and a party Gatsby has at his house, which both Daisy and Tom attend. At the conclusion of chapter six, Nick stays until the very end of the party, and Gatsby, upset that Daisy did not seem to have had a good time, begins talking about how he plans to get Daisy to leave Tom for him. He believes he can bring the past back and start exactly where he and Daisy left off years ago. It truly does seem like Gatsby is on the verge of realizing his dream of being with Daisy. Nick cautiously tells Gatsby that "you can't repeat the past,” to which Gatsby responds, “Of course you can!"
We can assume that Gatsby believes the past can be bought with his money, which he has earned as a bootlegger in order to win Daisy’s love. In other words, in Gatsby’s mind, now that he has money, he can finally have Daisy. In his mind, his plan has worked, and his goals are within reach. However, what he doesn’t realize is that, during the party, Daisy began to notice the differences between the classes, so even though Gatsby now has money, he is still not worthy of her due to their social inequalities. His dream, his green light, is still out of reach.