"I never grant favors without some return," said Oz; "but this much I will promise. If you will kill for me the Wicked Witch of the West, I will bestow upon you a great many brains, and such good brains that you will be the wisest man in all the Land of Oz."
"I thought you asked Dorothy to kill the Witch," said the Scarecrow, in surprise.
"So I did. I don't care who kills her. But until she is dead I will not grant your wish. Now go, and do not seek me again until you have earned the brains you so greatly desire."