" As the years go by, he returns to this invisible world rather than to earth for peace and solace. There also he finds a profound enchantment, although he can seldom describe it. He can discuss it with others of his kind, and because they too know and feel its power they understand. But his attempts to communicate his feelings to his wife or other earthly confidants invariably end in failure. Flying is hypnotic and all pilots are willing victims to the spell. Their world is like a magic island in which the factors of life and death assume their proper values. Thinking becomes clear because there are no earthly foibles or embellishments to confuse it. Professional pilots are, of necessity, uncomplicated, simple men. Their thinking must remain straightforward, or they die—violently. "

― Ernest K. Gann , Island in the Sky