I decided to call to him. Miss Baker had mentioned him at dinner, and that would do for an introduction. But I didn’t call to him, for he gave a sudden intimation that he was content to be alone—he stretched out his arms toward the dark water in a curious way, and, far as I was from him, I could have sworn he was trembling. 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.
— Nick Carraway, in F. Scott Fitzgerald’s The Great Gatsby
Photo credit: By Anthony Ross – Own work, CC0, https://commons.wikimedia.org/w/index.php?curid=69287951