The novel is renowned for its warmth and humor, despite dealing with the serious issues of rape and racial inequality. The narrator's father, Atticus Finch, has served as a moral hero for many readers and as a model of integrity for lawyers. One critic explains the novel's impact by writing, "In the twentieth century, To Kill a Mockingbird is probably the most widely read book dealing with race in America, and its protagonist, Atticus Finch, the most enduring fictional image of racial heroism."