What are the motifs in Illusions: The Adventures of a Reluctant Messiah by Richard Bach?

Flight is a recurring idea. On the surface, Illusions: The Adventures of a Reluctant Messiah, is the story of two gypsy pilots who decide for a while to work together in an occupation that normally is very lonely. The narrator, Richard, is a former flight instructor who remembers the thrill of first learning to fly. The complex tasks come easy to him because flying is all there is to life in that period. He has been hopping about the Midwest for years, offering rural folk ten-minute flights over their homes and fields for three dollars per flight, and understands the thrill they experience in the air, but for him it has become simply a job.