Moreover, the fact that Bellows moves the action inward helps achieve a stylistic feat. However, style is not its only achievement. This internal world becomes complicated and points to the complicated state of the human being. The device helps to outline the role of psychology in the novel, for instance and also helps to pose characters in concordance or dissonance with each other. For example, Wilhelm does not understand the inner life of his father and his thoughts, but he is attracted to the way in which the eccentric Dr. Tamkin thinks.
In short, the internal life of the protagonist allows Bellow to illustrate a world of wavering emotion that would not have been possible otherwise. Being inside the protagonist places the reader in the same position. It gives the reader an understanding of the problems Wilhelm faces, what makes him angry, what makes him frustrated, sad, and lonely. Therefore, throughout the book, the reader has accompanied Wilhelm in his frustrations and in his burdened feelings. In the end, we are also released and reborn in much the same way as Tommy. The reason is both because of literary catharsis and also because the reader has been following Tommy and has no other choice but to join him.