Mary Ann Shaffer said this quote

It's a real lightning bolt, this Science of Phrenology. I've found out more in the last three days than I knew in my whole life before. Mrs. Guilbert has always been a nasty one, but now I know that she can't help it—she's got a big pit in her Benevolence spot. She fell in the quarry when she was a girl, and my guess is she cracked her Benevolence and was never the same since.