Jem learns that Mrs. Dubose has a chronic and painful medical condition, his attitudechanges. Atticus says she is the bravest person he knows. She has been managing the condition with morphine and has become addicted. The morphine has terribleside effects. Since her condition is terminal, she wants to die with dignity without the morphine. This is why Atticus says she is the bravest person he knows,and Jem learns a lesson in courage.
Scout makes the men realize the human in themselves and in others. Her words of human warmth make the lynch mob leavebecause they know deep down inside that they are monsters for attempting to harm or kill another human being.
The turnout for the trial shows how humans arecurious. Even though they know what will happen to Tom Robinson, some show up with with hope of Tom being declared innocent and others wanting Tom to bekilled. Human nature is drawn to things that are not normal—especially bad things that take place in society. Everyone was out to see Tom get sentenced to hang