听力原文：W: Hi, Jim. Have you ever read the works of Ernest Hemingway? M: Oh, I like Hemingway very much, his style, the Hemingway theme with a Hemingway hero. W: You are really my bosom friend. Yes. Hemingway wrote all his life about one theme, that is 'grace under pressure'. The world Hemingway created is a world of violence, despair and death, a world in which man cannot find the meaning of life. M: Yes. I have the same feeling with you. But his hero is not a coward, a weeper. In face of inevitable defeat, keeping a stiff upper-lip means a kind of victory. W: So he often has stoic endurance. Even in defeat he can maintain some dignity in spite of defeat he continues to fight with the despairing courage, which enables him to behave like a man, to assert his dignity in face of adversity. From him we can see the spirit of the noble--Hemingway type of individualism. M: It is a kind of tragic beauty. I am deeply touched by their spirit, even though it's futile to fight. W: At least they give us a stir, give us an inspiration: never give up. M: Yes. Hemingway is a myth in his own times, and a myth in American literature. But he ended his life to the whole world's shock. W: He died a strong man, a hero. Few have such a despairing courage, and he did this with 'grace under pres sure'. What is the conversation mainly about?