“Possibly it had occurred to him the colossal significance of that light had now vanished forever. [...] It had seemed as close as a star to the moon. Now it was a green light on a dock. His count of enchanted objects had diminished by one.”
“If it wasn’t for the mist we could see your home across the bay," said Gatsby. "You always have a green light that burns at the end of your dock."Daisy put her arm through his abruptly but he seemed absorbed in what he had just said. Possibly it had occurred to him that the colossal significance of that light had now vanished forever. Compared to the great distance that had separated him from Daisy it had seemed very near to him, almost touching her. It had seemed as close as a star to the moon. Now it was again a green light on a dock. His count of enchanted things had diminished by one.”
“All this had always been and he had never seen it; he was never present. Now he was present and belonged to it. Through his eyes he saw light and shadows; through his mind he was aware of moon and stars (p. 38).”
“I thought of Gatsby's wonder when he first picked out the green light at the end of Daisy's dock. He had come a long way to this lawn and his dream must have seemed so close that he could hardly fail to grasp it. He did not know that it was already behind him. [- Nick Carroway]”
“It is like a piece of my soul had been lost, empty, and it is now filled with the light of a million stars.”
“Involuntarily I glanced seaward and distinguished nothing except a single green light, minute and far away, that might have been the end of a dock. When I looked once more for Gatsby, he had vanished, and I was alone again in the unquiet darkness.”