How is courage explored in TKAM?

Bravery takes many forms in To Kill A Mockingbird. Atticus is brave to defend a black man in the face of criticism and threats of violence. He also is brave in the face of danger, both when he kills the rabid dog with a single shot and when facing the mob of men outside the jailhouse. Atticus urges Scout to be brave and prevent herself from fighting those who criticize her or her family. To Atticus, withholding violence is one of the highest forms of bravery. The children believe themselves to be brave when approaching the Radley house early in the book, but learn later on that this was false bravery, and in fact, silly. Atticus holds up Mrs. Dubose as the ultimate definition of bravery, as she finds against her morphine addiction in order to be free from it before she dies, even when she knows she will die in the process. Atticus, who also fights against a power greater than himself, tells his children they should have great respect for Mrs. Dubose. Finally, Bob Ewell represents the greatest cowardice, as he both lies in the courtroom to protect himself and resorts to attacking children in the darkness in order to make himself feel more of a man.