In Harper Lee's classic novel, To Kill a Mockingbird, there are several characters who teach Scout Finch, the narrator and protagonist, life lessons. Those who influence Scout most include her father, Atticus Finch; Calpurnia, the Finches' housekeeper; Boo Radley, the misunderstood neighbor; Jem Finch, Scout's brother; Tom Robinson, the African-American man falsely accused of rape; and Miss Maudie Atkinson, the Finches' close neighbor and dear friend. There are, of course, others who instruct Scout in invaluable ways, such as Mrs. Henry Lafayette Dubose, Aunt Alexandra, Dolphus Raymond, and Uncle Jack.
Perhaps the most important lesson that Scout learns throughout the course of the novel is not to judge others. This lesson is taught foremost through Scout's interactions with Arthur "Boo" Radley and the events related to the trial of Tom Robinson. However, it is reinforced through the actions of several characters, including Mrs. Henry Lafayette Dubose, who overcomes her addiction to morphine in order to die free and Dolphus Raymond, who chooses to encourage others to believe he's a drunk so they will accept his mixed-race relationship.