In Death of a Salesman the theme of hope is ascertained through Willy's strive to achieve the American Dream and to treat his family with valor. Biff demonstrates this theme by hoping that one day his family will cherish each other and be proud of him like they once were. Arthur Miller wants his readers to understand that if they work hard at something it can sincerely come true. If Biff and Willy put aside their differences for just a moment and talked things out- devoid of getting irrational they would have been back to normal. What the father and son pair doesn't realize is that they both hope to get along with each other but they never speak about it so it doesn't occur.