In the story “Death of a Salesman” by Arthur Miller, Willy Loman who is father of Biff always say that Biff is the best. Willy speaks with confidence that whatever Biff does will be great and the world will recognize his splendid ability. However, the reality that Biff faces is not smooth such as his father has told him. Biff encounters a tragic event that Willy who always cheers him has a lover who is the woman in the play. After the incident, Biff always thinks pessimistically. Furthermore, the negative attitude tempted him into wrong ways. Even though he got painful wound by his father, his wrong behavior is not different from his father who deceived his family. In other words, he falls under self-deception with denies that the root of all
