The Old Man and the Sea
How we cite our quotes:
He was an old man who fished alone in a skiff in the Gulf Stream and he had gone eighty-four days now without taking a fish. In the first forty days a boy had been with him. But after forty days without a fish the boy’s parents had told him that the old man was now definitely and finally salao, which is the worst form of unlucky, and the boy had gone at their orders in another boat which caught three good fish the first week. It made the boy sad to see the old man come in each day with his skiff empty and he always went down to help him carry either the coiled lines or the gaff and harpoon and the sail that was furled around the mast. The sail was patched with flour sacks and, furled, it looked like the flag of permanent defeat. (1.1)
At first, superstition is imposed by others upon the old man.
"No," the old man said. "You’re with a lucky boat. Stay with them." (1.6)
The old man buys into the notion of luck as far as the boy is concerned, so much so as to base his decisions on it.
"If you were my boy I’d take you out and gamble," he said. "But you are your father’s and your mother’s and you are in a lucky boat." (1.28)
The notion of "lucky" vs. "unlucky" contrasts the "old" man and the "boy" further.