The Wizard of Oz by Lynam Frank Baum Chapter 4 Page 9

” And she handed the basket to the Scarecrow.

There were no fences at all by the roadside now, and the land was rough and untilled. Toward evening they came to a great forest, where the trees grew so big and close together that their branches met over the road of yellow brick. It was almost dark under the trees, for the branches shut out the daylight; but the travelers did not stop, and went on into the foreSt. “If this road goes in, it must come out,” said the Scarecrow, “and as the Emerald City is at the other end of the road, we must go wherever it leads us.”

“Anyone would know that,” said Dorothy.

“Certainly; that is why I know it,” returned the Scarecrow. “If it required brains to figure it out, I never should have said it.”