Miss maudie tells the children about their father. summarize what she says about him.

I think this refers to the talk she gave them after their father has shoot the rabid dog in the neighborhood. Miss Maudi tells to Scout and Jem that their father was once the best dead-shot in the whole county and that he was known as "One-Shot Finch" but that he also doesn't like to use guns as he believes that with them God gave him an unfair advantage over other living beings.