Comment on Aunt Alexandra's ideas about breeding and family. Why does Atticus tell them to forget it? Who is right,do you think?it is in chapter 13

Aunt Alexandra believes fine "folk" are the result of good breeding (they would have to be white of course) and a strong conservative Christian value system. She claims the Finch family is descended from Southern gentry. Atticus knows Aunt Alexandra is full of "hot air" but lets his sister talk.