Ernest Hemingway's groundbreaking prose style and examination of timeless themes made him one of the most important American writers of the twentieth century. Yet in Ernest Hemingway: Thought in Action, Mark Cirino observes, "Literary criticism has accused Hemingway of many things but thinking too deeply is not one of them." Although much has been written about the author's love of action-hunting, fishing, drinking, bullfighting, boxing, travel,...