Boo Radley is a suitable example of appearances not always reflecting reality. This is because all this time he was locked up in his house he was thought to be a real weirdo. The people of Maycomb, especially the kids, have their own ideas about Boo. Jem even called him a phantom in the book. But, the point is, even though boo appeared to be messed up and super creepy, he isn’t. He saved Jem and Scout’s lives.
When Atticus agreed to be Tom Robinson’s lawyer he told the kids it was his responsibility to help out Tom or he could hold his head up in town any more. He knew Tom was innocent and that he was most likely fighting a losing battle, but he did it anyway because he felt responsible.
People often fear what they don’t understand this is a true statement for how people in Maycomb thought of Mr. Raymond. They didn’t understand why he hung out with black people instead of white. And since they didn’t understand they started looking for other reasons as to figure out why he was doing this. They blamed it on the bottle wrapped in a paper sack saying he was drunk all the time and didn’t really care. When, in reality he just thought it was easier to live with blacks then whites and he wasn’t drunk either, it was just coca-cola. (I think this is what the question meant, but I’m not sure.)
Atticus is the definition of courage. Because when you do what is right even when the chances of you succeeding are poor and you still do it, that’s courage. He accepted to be Tom’s lawyer in the court case. And he knew that he probably wouldn’t win, but he did it anyway, and that’s courage.