Stars are beautiful, but they must not take an active part in anything, they must just look on forever. It is a punishment put on them for something they did so long ago that no star now knows what it was.
The Scarecrow watched the Woodman while he worked and said to him "I cannot think why this wall is here nor what it is made of. " "Rest you brains and do not worry about the wall," replied the Woodman, "when we have climbed over it we shall know what is on the other side.