How does Marlo Morgan use imagery in Mutant Message Down Under?

Imagery:

"... somewhere in the dry heat of the Outback there remains a slow, steady, ancient heartbeat, a unique group of people not concerned with racism, but concerned only with other people and the environment. To understand that pulse is to better understand being human or human being-ness."

"The tribe carried no provisions. They planted no crops; they participated in no harvest. They walked the blazing Australian outback, knowing each day they would receive the blessings of the universe. The universe never disappointed them."