The old man and the sea, by Ernest Hemingway is, I think, based on the idea that the defeat lies not in losing but in quitting. What you need for being victorious is passion for your goal. The old man is passionate about his profession, which is, fishing. Hence, the more he suffers the more he loves. The passion never lets you lose. I am bemused because of one thought in my mind and that is “What makes the old man so much passionate about his profession?”
The answers may be various. One may say that it is the need to prove his self. Though people around him have contradictory opinions about his ability, as some doubts him and some are keen to learn from him, he has perfect idea about his abilities. Though experienced, he, having lost his marlin to the sharks admits, "I WENT TOO FAR." Hence, he analyses his error which he will correct as he agrees to the boys proposal to let him sail with him. Having experienced the hard blow at the hands of Sharks, of course without weapons and being alone, his such readily made agreement shows that his spirit if not broken than is juddered.
My answer to the question that I have raised above will be, “It is out of his sheer need to make his living that the old man puts his life at stake and the same he will do till the last gasp of his life.” To make my point clear, I would like to draw attention to the poverty stricken condition of this old man. He is dependent on the boy, who is actually not his, for his food and clothing. Besides, with his wife dead, he has no one to look after himself. What one may do if not put one’s life at stake? What would the old man have done if he would have enough savings to spend in the latter part of his life? Do you think he would go on fishing the same way? If yes, then why?