Themes are the fundamental and often universal ideas explored in a literary work.

The Coexistence of Good and Evil

The most important theme of To Kill a Mockingbird is the book’s exploration of the moral nature of human beings—that is, whether people are essentially good or essentially evil. The novel approaches this question by dramatizing Scout and Jem’s transition from a perspective of childhood innocence, in which they assume that people are good because they have never seen evil, to a more adult perspective, in which they have confronted evil and must incorporate it into their understanding of the world. As a result of this portrayal of the transition from innocence to experience, one of the book’s important subthemes involves the threat that hatred, prejudice, and ignorance pose to the innocent: people such as Tom Robinson and Boo Radley are not prepared for the evil that they encounter, and, as a result, they are destroyed. Even Jem is victimized to an extent by his discovery of the evil of racism during and after the trial. Whereas Scout is able to maintain her basic faith in human nature despite Tom’s conviction, Jem’s faith in justice and in humanity is badly damaged, and he retreats into a state of disillusionment.

Read more about the exploration of good and evil in Arthur Miller’s play, The Crucible.

The moral voice of To Kill a Mockingbird is embodied by Atticus Finch, who is virtually unique in the novel in that he has experienced and understood evil without losing his faith in the human capacity for goodness. Atticus understands that, rather than being simply creatures of good or creatures of evil, most people have both good and bad qualities. The important thing is to appreciate the good qualities and understand the bad qualities by treating others with sympathy and trying to see life from their perspective. He tries to teach this ultimate moral lesson to Jem and Scout to show them that it is possible to live with conscience without losing hope or becoming cynical. In this way, Atticus is able to admire Mrs. Dubose’s courage even while deploring her racism. Scout’s progress as a character in the novel is defined by her gradual development toward understanding Atticus’s lessons, culminating when, in the final chapters, Scout at last sees Boo Radley as a human being. Her newfound ability to view the world from his perspective ensures that she will not become jaded as she loses her innocence.

The Importance of Moral Education

Because exploration of the novel’s larger moral questions takes place within the perspective of children, the education of children is necessarily involved in the development of all of the novel’s themes. In a sense, the plot of the story charts Scout’s moral education, and the theme of how children are educated—how they are taught to move from innocence to adulthood—recurs throughout the novel (at the end of the book, Scout even says that she has learned practically everything except algebra). This theme is explored most powerfully through the relationship between Atticus and his children, as he devotes himself to instilling a social conscience in Jem and Scout. The scenes at school provide a direct counterpoint to Atticus’s effective education of his children: Scout is frequently confronted with teachers who are either frustratingly unsympathetic to children’s needs or morally hypocritical. As is true of To Kill a Mockingbird’s other moral themes, the novel’s conclusion about education is that the most important lessons are those of sympathy and understanding, and that a sympathetic, understanding approach is the best way to teach these lessons. In this way, Atticus’s ability to put himself in his children’s shoes makes him an excellent teacher, while Miss Caroline’s rigid commitment to the educational techniques that she learned in college makes her ineffective and even dangerous.

The Existence of Social Inequality

Differences in social status are explored largely through the overcomplicated social hierarchy of Maycomb, the ins and outs of which constantly baffle the children. The relatively well-off Finches stand near the top of Maycomb’s social hierarchy, with most of the townspeople beneath them. Country farmers like the Cunninghams lie below the townspeople, and the Ewells rest below the Cunninghams. But the Black community in Maycomb, despite its abundance of admirable qualities, squats below even the Ewells, enabling Bob Ewell to make up for his own lack of importance by persecuting Tom Robinson. These rigid social divisions that make up so much of the adult world are revealed in the book to be both irrational and destructive. For example, Scout cannot understand why Aunt Alexandra refuses to let her consort with young Walter Cunningham. Lee uses the children’s perplexity at the unpleasant layering of Maycomb society to critique the role of class status and, ultimately, prejudice in human interaction.


Discussions about prejudice in general, and racism in particular, are at the heart of To Kill a Mockingbird. Conflicts over racism drive some of the most compelling and memorable scenes in the novel. Racial conflict causes the two dramatic deaths that occur in the story. On one level, To Kill a Mockingbird represents a simplistic and moralistic view of racial prejudice. White people who are racist are bad, and white people who are not racist are good. Atticus risks his reputation, his position in the community, and ultimately the safety of his children because he is not racist, and therefore good. Bob Ewell falsely accuses a Black man of rape, spits on Atticus publicly, and attempts to murder a child because he is racist, and therefore bad. To Kill a Mockingbird does attempt to look at some of the complexities of living in a racist society. Both Scout and Jem confront everything from unpleasantness to murderous hostility as they learn how their family’s resistance to racial prejudice has positioned them against the community at large.

The treatment of prejudice in To Kill a Mockingbird is not only simplistic in terms of morality, but also in terms of perspective. To read the novel one would think racism is a problem that exists between educated, financially stable, moral white people, and ignorant, dirt poor, vicious white people. The Black characters in the novel are rarely given voice on the topic of racism. When they do speak it is largely in terms of gratitude for the good white people of town and not in terms of anger, frustration, resistance, or hostility towards the culture of racism. When the author does present Black characters as trying to resist racist abuses, she shows them doing so by avoiding or retreating, as when Tom Robinson attempts to escape from prison or when Helen Robinson walks through the woods to avoid going past the Ewell house. Black characters in the novel never respond to racism actively and barely respond to it reactively. When a Black character is critical of white people, as when Lula challenges Calpurnia for bringing Jem and Scout to the Black church, she is ostracized by the rest of the Black community, suggesting her complaints against white people are unfounded.


Though the trial of Tom Robinson takes up only about one tenth of the book, it represents the narrative center around which the rest of the novel revolves. This trial seems intended as an indictment of the legal system, at the least as it exists of within the town of Maycomb. Procedurally, the judge carries out the trial properly. The lawyers select the jury through normal means, and both the defense and prosecution to make their cases. But the all-white jury does not interpret the evidence according to the law, but rather applies their own prejudices to determine the outcome of the case. Tom Robinson’s guilty verdict exemplifies the limitations of the law, and asks the reader to reconsider the meaning of the word “fair” in the phrase “a fair trial.” While Atticus understands that the legal system is flawed, he firmly believes in the legal process. At the same time, Atticus believes the law should be applied differently to different people. He explains to Scout that because she has a good life full of opportunities she should have to obey the law fully, but he suggests that there are others who have much more difficult lives and far fewer opportunities, and that there are times when it is just to let those people break the law in small ways so that they are not overly harmed by the law’s application.


There are two lies at the heart of To Kill a Mockingbird. Mayella Ewell says that Tom Robinson raped her, and Heck Tate says that Bob Ewell accidentally stabbed himself. The first lie destroys an innocent man who occupies a precarious social position in Maycomb because of his race. The second lie prevents the destruction of an innocent man who occupies a precarious social position in Maycomb because of his extreme reclusiveness. Taken together, the two lies reflect how deception can be used to harm or to protect. The two lies also reveal how the most vulnerable members of society can be the most deeply affected by the stories people tell about them. Social status also determines who is allowed to tell a lie. During the trial, prosecutor Horace Gilmer confronts Tom Robinson, asking Tom if he is accusing Mayella Ewell of lying. Even though Tom knows full well that Mayella is lying, he cannot say so because in Maycomb the lies of a white woman carry more weight than the truth told by a Black man. Atticus, on the other hand, who is white, male, and of a higher class status than Mayella, can accuse her of lying when he suggests that it was really Mayella’s father, not Tom, who beat her.