To Kill A Mockingbird, by Harper Lee

Scout:. . .I think there's just one kind of folks. Folks.

Jem: That's what I thought, too. . .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 something. 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."

Leopard Skin Pillbox Hat, by Beck (not Bob)