The Old Man and the Sea
I wonder what he made that lurch for, he thought. The wire must have slipped on the great hill of his back. Certainly his back cannot feel as badly as mine does. But he cannot pull this skiff forever, no matter how great he is. Now everything is cleared away that might make trouble and I have a big reserve of line; all that a man can ask. (2.104)
It encouraged him to talk because his back had stiffened in the night and it hurt truly now. (3.17)
The bird had flown up when the line jerked and the old man had not even seen him go. He felt the line carefully with his right hand and noticed his hand was bleeding.
"Something hurt him then," he said aloud and pulled back on the line to see if he could turn the fish. But when he was touching the breaking point he held steady and settled back against the strain of the line.
"You’re feeling it now, fish," he said. "And so, God knows, am I." (3.20-3.22)