At the New York Times, Alice Gregory and Pankaj Mishra discuss the role of moralism in the novel—and conclude that authors should seek to question and provoke rather than preach:
Not only does moral preoccupation corrupt the artfulness of fiction, but fiction is an inefficient and insincere vehicle for moralizing. If an author’s motive is to impart a lesson, he would be better off writing a manifesto or publishing a pamphlet and distributing it free on the subway.