The Great Gatsby narrates a symbolist tragedy in a transitional era.It's ambivalent characterization and themes find justifications in the writer's own ideology of two opposed ideas,and in his efforts to define and judge subjects of social problems.The ambivalent characterization concerns the writer's dual response to the protagonist's corruption and innocence respectively.Ultimately the writer is convinced that both the corruption and mnocence are justifiable in the morality of his protagonist.Whereas the ambivalent themes dealing with the American dream attach importance to the social class perspectives and the vision of history.undoubtedly the writer slides into a compromise with his themes:repudation and approval.Because of the equally strong interplay of two opposed ideas,the writer fails to locate a definite position and scale,which results in his immature control in the art of the work.The writer's characteristic code and achievement are significant because they genuinely reveal human being's fundamental dilemma in social life.