On 23 September I’ll be taking part in the Dion Fortune Seminar, held in Glastonbury Town Hall. Dion Fortune was one of the major figures in twentieth century occultism. She was the author of many books, including the The Mystical Qabalah, probably the most influential work of popular kabbalism, and a central work in the Golden Dawn canon. She was also the author of some gripping occult novels, of which The Sea Priestess is probably the best known. Fortune was a fascinating character and, as most magicians do, led an interesting life. I write about her in Revolutionaries of the Soul and am delighted to have been invited to speak at this annual event. My talk, “Psychic Self-Defense: How to Stay Safe During the War on Reality,” will draw on Fortune’s own experiences of psychic attack, recounted in her classic Psychic Self-Defense, and will look at how these can help us in our age of meme-magic and post-truth, in which the very character of reality seems to be under siege.