" No, everybody's gotta learn, nobody's born knowin'. That Walter's as smart as he can be, he just gets held back sometimes because he has to stay out and help his daddy. Nothin's wrong with him. Naw, Jem, I think there's just one kind of folks. Folks."
....
"That's what I thought too," he said at last, "when I was your age. If there's just one kind of folks, why can't they get along with each other? If they're all alike, why do they go out of their way to despise each other? Scout, I think I'm beginning to understand why Boo Radley's stayed shut up in the house all this time . . . it's because he wants to stay inside. "

― , To Kill A Mockingbird: Harper Lee -- Book Summary And Analysis! (To Kill A Mockingbird: Book Summary And Analysis-- Dvd, Hardcover, Movie, Book, Audiobook, Summary!)