the catcher in the rye

Does Holden learn anything by the end of the novel? Does he change his point of view or remain the same? Additionally, discuss the symbolism of the catcher in the rye- Why does Holden want to be the catcher in the rye? What are the positive and negative aspects of his fantasy? Discuss any symbols, scenes and quotations from the novel that pertain to this topic- give the thesis and give three specific examples to support your thesis-