I never understood why Hemingway won a Nobel Prize for this. It's not outstanding in the same way that For Whom the Bell Tolls is, I think. Anyway, it's a good story, and I've lost my copy of For Whom... (and, I've just noticed, A Farewell to Arms, too), so I can't reacquaint myself with the story, in order to select an appropriate quotation. Oh, if it matters, like Of Mice and Men, it's short!
Everything about him was old except his eyes and they were the same colour as the sea and were cheerful and undefeated.
"Santiago," the boy said to him as they climbed the bank from where the skiff was hauled up. "I could go with you again. We've made some money."
The old man had taught the boy to fish and the boy loved him.
"No," the old man said. "You're with a lucky boat. Stay with them."
"But remember how you went eighty-seven days without fish and then we caught big ones every day for three weeks."
"I remember," the old man said. "I know you did not leave me because you doubted."
"It was papa made me leave. I am a boy and I must obey him."
"I know," the old man said. "It is quite normal."
"He hasn't much faith."
"No," the old man said. "But we have. Haven't we?"