There were only four witches in all the Land of Oz, and two of them, those who live in the North and the South, are good witches. I know this is true… - L. Frank Baum

"A Glass Cat!" exclaimed Ojo, astonished. "Yes; she makes a very pleasant companion, but admires herself a little more than is considered modest, and she positively refuses to catch mice," explained Margolotte. "My husband made the cat some pink brains, but they proved to be too high-bred and particular for a cat, so she thinks it is undignified in her to catch mice. Also she has a pretty blood-red heart, but it is made of stone — a ruby, I think — and so is rather hard and unfeeling."

shoes were so cut and slashed that they were ready to fall from her feet.

"Can't you give me brains?" asked the Scarecrow.
"You don't need them. You are learning something every day. A baby has brains, but it doesn't know much. Experience is the only thing that brings knowledge, and the longer you are on earth the more experience you are sure to get."