Wizard in the shape he had taken before, and all were greatly surprised when they looked about and saw no one at all in the room. They kept close to the door and closer to one another, for the stillness of the empty room was more dreadful than any of the forms they had seen Oz take.

Presently they heard a solemn Voice, that seemed to come from somewhere near the top of the great dome, and it said:

“I am Oz, the Great and Terrible. Why do you seek me?”

They looked again in every part of the room, and then, seeing no one, Dorothy asked, “Where are you?”

“I am everywhere,” answered the Voice, “but to the eyes of common mortals I am invisible.

I will now seat myself upon my throne, that you may converse with me.”