The most important theme of To Kill a Mockingbird is the book exploration of the moral nature of human beings, 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 sub-themes 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.
Main characters:
Jean Louise “Scout” Finch – The narrator and protagonist of the story. Scout lives with her father, Atticus, her brother, Jem, and their black cook, Calpurnia, in Maycomb. She is intelligent and, by the standards of her time and place, a tomboy. Scout has a combative streak and a basic faith in the goodness of the people in her community. As the novel progresses, this faith is tested by the hatred and prejudice that emerge during Tom Robinson’s trial. Scout eventually develops a more grown-up perspective that enables her to appreciate human goodness without ignoring human evil.
Atticus Finch – Scout and Jem’s father, a lawyer in Maycomb descended from an old local family. A widower with a dry sense of humor, Atticus has instilled in his children his strong sense of morality and justice. He is one of the few residents of Maycomb committed to racial equality. When he agrees to defend Tom Robinson, a black man charged with raping a white woman, he exposes himself and his family to the anger of the white community. With his strongly held convictions, wisdom, and empathy, Atticus functions as the novel’s moral backbone.
Jeremy Atticus “Jem” Finch – Scout’s brother and constant playmate at the beginning of the story. Jem is something of a typical American boy, refusing to back down from dares and fantasizing about playing football. Four years older than Scout, he gradually separates himself from her games, but he remains her close companion and protector throughout the novel. Jem moves into adolescence during the story, and his ideals are shaken badly by the evil and injustice that he perceives during the trial of Tom Robinson.
Arthur “Boo” Radley – A recluse who never sets foot outside his house, Boo dominates the imaginations of Jem, Scout, and Dill. He is a powerful symbol of goodness swathed in an initial shroud of creepiness, leaving little presents for Scout and Jem and emerging at an opportune moment to save the children. An intelligent child emotionally damaged by his cruel father, Boo provides an example of the threat that evil poses to innocence and goodness. He is one of the novel’s “mockingbirds,” a good person injured by the evil of mankind.
Tom Robinson – The black field hand accused of rape. Tom is one of the novel’s “mockingbirds,” an important symbol of innocence destroyed by evil.
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To Kill a Mockingbird 