The appetite for Hemingway biographies appears limitless. The constant excavation of his life creates the danger of pollution: the loathsome sludge of the personality might seep into the genius of The Sun Also Rises, A Farewell to Arms, and a score of magnificent short stories. Unless, that is, we can see through the phoniness of America’s number-one he-man to the genuine tragedy of masculinity that is played out in Hemingway’s life and in his best work.