Part I. Antiquity: 1. Ancient mysteries Charles Stein; 2. Pythagoras and Pythagoreanism Joscelyn Godwin; 3. Parmenides and Empedocles Jessica Elbert Decker and Matthew Mayock; 4. Plato, Plotinus, and Neoplatonism Gwenaëlle Aubry; 5. Hermetism and Gnosticism Roelof van den Broek; 6. Early Jewish mysticism Daphna Arbel; 7. Early Christian mysticism April D. Deconick; Part II. The Middle Ages: 8. Sufism William C. Chittick; 9. Kabbalah Brian Ogren; 10. Medieval Christian mysticism Bruce Milem; 11. Hildegard of Bingen and women's mysticism Anne L. Clark; Part III. The Renaissance and Early Modernity: 12. Renaissance Hermetism Antoine Faivre; 13. Christian Kabbalah Peter J. Forshaw; 14. Paracelsianism Bruce T. Moran; 15. Rosicrucianism Hereward Tilton; 16. Jacob Boehme and Christian theosophy Glenn Alexander Magee; 17. Freemasonry Jan A. M. Snoek; 18. Swedenborg and Swedenborgianism Jane Williams-Hogan; 19. Mesmer and animal magnetism Adam Crabtree; Part IV. The Nineteenth Century and Beyond: 20. Spiritualism Cathy Gutierrez; 21. H. P. Blavatsky and theosophy Michael Gomes; 22. Rudolf Steiner and anthroposophy Robert McDermott; 23. The Golden Dawn and the O.T.O. Egil Asprem; 24. G. I. Gurdjieff and the Fourth Way Glenn Alexander Magee; 25. C. G. Jung and Jungianism Gerhard Wehr; 26. René Guénon and traditionalism Mark Sedgwick; 27. Via Negativa in the twentieth century Arthur Versluis; 28. Contemporary Paganism Chas S. Clifton; 29. The new age Olav Hammer; Part V. Common Threads: 30. Alchemy Lawrence M. Principe; 31. Astrology Kocku von Stuckrad; 32. Gnosis Wouter J. Hanegraaff; 33. Magic Wouter J. Hanegraaff; 34. Mathematical esotericism Jean-Pierre Brach; 35. Panpsychism Lee Irwin; 36. Sexuality Hugh B. Urban.