<P>In <EM>Illusions: The Adventures of a Reluctant Messiah</EM>, Richard Bach met Donald Shimoda, a fellow pilot with the keys to the universe who barnstormed the Midwest in a Travel Air biplane. Part of Shimoda's secret was a small book, bound in what looked like suede: <EM>Messiah's Handbook, Reminders for the Advanced Soul</EM>. "Open it," he said, "and whatever you need to know is there. "Lost for decades and rediscovered, here it is in print at last--reminders for those who have outgrown cynicism and doubt.</P>