The two adventurers were going along. Avon was singing.
"Stop!" cried Edward. "We've reached the end of the branch." With great care the two creatures edged to the very tip.
"The end of the branch," said Avon.
"The beginning of the sky," said Edward.
"Which is it?" asked Avon. "The beginning or the end?"
"It depends on what there's more of, the tree or the sky. Think of all the things that get in your way along the branch—leaves, bark, other creatures, a million things to slow you down. Now look at the sky."
