What do you think the green light in the Great Gatsby symbolises?

Gatsby's green light is symbolic of his dream. This usually is tied with attaining Daisy, but can also be traced back to the green trees we see at the end of the book, which also shows how his dream is tied to the American Dream. Many have also said that, as it is green, it is also symbolic of the green of American dollar bills. One important thing to not here, is that Gatsby never reaches his dream, much like many never reached the American Dream, so the green light also shows us something that is desired, but ultimately unattainable.