The friends came back to the Emerald City. Oz did not want to see them, but at last he let them in. They stood in the empty room and heard a voice. Then Toto knocked over a screen in the corner. Behind it stood a little old man with a bald head. "I am Oz," he said quietly. "But you are a humbug!" cried the Scarecrow. "Yes, my dear, I am. I was a balloon man in Omaha, and the wind carried me here. The people thought I was a great wizard, so I built this city and told them to wear green glasses." He gave the Scarecrow a head full of bran and pins, the Tin Woodman a silk heart, and the Lion a green drink. They were all happy at once, because they had always had what they asked for.