Dion Fortune (1891-1946), founder of The Society of the Inner Light, was a prolific writer, pioneer psychologist, powerful psychic, thus recognized as one of the most luminous and significant figures of 20th-century esoteric thought. Author of the highly acclaimed Psychic Self-Defense, her novels include The Goat Foot God, The Demon Lover, and The Winged Bull. She was also a member of the Order of the Golden Dawn, whose members included at various times such people as A.E. Waite, Aleister Crowley, and W.B. Yeats. Gareth Knight is one of the major occult practitioners and authors of today. His many books include Experience of Inner Worlds, Magical World of the Tarot, Secret Tradition in Arthurian Legend.