Quote 49
"When I was your age I was before the mast on a square rigged ship that ran to Africa and I have seen lions on the beaches in the evening."
"I know. You told me." (1.125-1.126)
The old man is caught up in the past and the memory of his youth.
Quote 50
He remembered the time he had hooked one of a pair of marlin. The male fish always let the female fish feed first and the hooked fish, the female, made a wild, panic-stricken, despairing fight that soon exhausted her, and all the time the male had stayed with her, crossing the line and circling with her on the surface. He had stayed so close that the old man was afraid he would cut the line with his tail which was sharp as a scythe and almost of that size and shape. When the old man had gaffed her and clubbed her, holding the rapier bill with its sandpaper edge and dubbing her across the top of her head until her colour turned to a colour almost like the backing of mirrors, and then, with the boy’s aid, hoisted her aboard, the male fish had stayed by the side of the boat. Then, while the old man was clearing the lines and preparing the harpoon, the male fish jumped high into the air beside the boat to see where the female was and then went down deep, his lavender wings, that were his pectoral fins, spread wide and all his wide lavender stripes showing. He was beautiful, the old man remembered, and he had stayed. (2.92)
The old man remembers creatures, not other people; it is with creatures that he feels the most brotherhood.
Quote 51
"I told the boy I was a strange old man," he said. "Now is when I must prove it."
The thousand times that he had proved it meant nothing. Now he was proving it again. Each time was a new time and he never thought about the past when he was doing it.
I wish he’d sleep and I could sleep and dream about the lions, he thought. Why are the lions the main thing that is left? (3.3.76-3.78)
The lions are the main thing that is left because the old man feels a greater kinship with creatures, and more in common with the natural world, than he does with humans.