Grateful acknowledgment is made for permission to reprint the following:
“The Sleep of Reason Produces Monsters,” Francisco de Goya and Lucientes. Used by permission of Victoria and Albert Museum, London/Art Resource, NY.
“The Scream, Woodcut.” Edvard Munch. Used by permission of Foto Marburg/Art Resource, NY.
“Guernica,” Pablo Picasso, © 1999 Estate of Pablo Picasso/Artists Rights Society (ARS), New York.
“Creation of Adam,” Michelangelo Buonarroti, Sistine Chapel. Used by permission of Alinari/Art Resource, NY.
“Job and His Family Restored to Prosperity,” William Blake, Illustrations of the Book of Job, III, 45, pl. 21. Used by permission of The Pierpont Morgan Library/Art Resource, NY.
“The Invisible Helper,” Courtesy of the Rosicrucian Fellowship, Oceanside, California.
“Melancholy,” Albrecht Durer. Used by permission of Giraudon/Art Resource, NY.