FLIGHT. The image of a human being escaping the bonds of earthly life to float and soar about the skies unencumbered and free appears in religious myths, mystical tracts, ritual dramas, and imaginative expressions around the world, from the most archaic to the most contemporary of cultures. While of course their specific historical circumstances and motivations vary, one still feels that in some ways the imagination of the Paleolithic cave dweller who painted the figure of a man with a bird's head on the walls of the caves at Lascaux is not so different from the imagination that created the ancient Greek story of Icarus yearning to fly to the sun or that of the poets of Vedic India who sang praises of the long-haired ascetic who "flies through the air, looking on all shapes below, the friend to all the gods" (Ṛgveda 10.136.4). Perhaps, too, this imagination is...