Catafalque: Carl Jung and the End of Humanity (2-volume set, London: Catafalque Press, 2018)

A Story Waiting to Pierce You: Mongolia, Tibet and the Destiny of the Western World (Inverness, Calif.: Golden Sufi Publishing, 2010)

Reality (Inverness, Calif.: Golden Sufi Publishing, 2003; 2nd ed., London: Catafalque Press, 2020)

In the Dark Places of Wisdom (Inverness, Calif.: Golden Sufi Publishing, 1999)

Ancient Philosophy, Mystery and Magic: Empedocles and Pythagorean Tradition (Oxford, UK: Oxford University Press, 1995)

‘The Paths of the Ancient Sages: A Sacred Tradition Between East and West’, in Crossing Religious Frontiers, ed. H. Oldmeadow (Bloomington, 2010), pp. 43-49. (An earlier version of this article was published in Lapis, volume 10, New York, December 1999, pp. 63-68)

(With Maria Kingsley) ‘As Far As Longing Can Reach’, Parabola, volume 31/2 (New York, 2006), pp. 56-59. Reprinted in The Inner Journey, ed. Martha Heyneman (Sandpoint, ID, 2008), pp. 242-246

‘Raven’s Appearance: The Language of Prophecy’, ReVision, volume 26/4 (Washington, D.C., 2004), pp. 43-45

‘Empedocles for the New Millennium’, Ancient Philosophy, volume 22 (Pittsburgh, 2002), pp. 333-413. Published in Greek as a book by Archetypo (Thessaloniki, 2008).

‘An Introduction to the Hermetica: The Asclepius and Ancient Esoteric Tradition’, in From Poimandres to Jacob Boehme, ed. R. van den Broek and C. van Heertum (Amsterdam, 2000), pp. 18-40. Translated into Dutch in Prana, volume 124 (Deventer, April/May 2001), pp. 44-61

‘Where East and West are One’, Caduceus, volume 47 (Leamington Spa, UK, Spring 2000), pp. 21-24 and volume 48 (Summer 2000), pp. 21-24

‘Parmenides and the Origins of Western Thought’, The Scientific and Medical Network Review, volume 70 (Colinsburgh, UK, August 1999), pp. 15-19

‘In the Dark Places of Wisdom’, Parabola, volume 23/4 (New York, 1998), pp. 40-46. Translated into Hungarian in Tradicio, volume MMIII (Debrecen, 2003), pp. 149-154

‘Knowing Beyond Knowing: The Heart of Hermetic Tradition’, Parabola, volume 22/1 (New York, 1997), pp. 21-25. Translated into Greek in Avaton, volume 4 (Thessaloniki, September/October 1999), pp. 68-71

‘Empedocles’ Two Poems’, Hermes, volume 124 (Stuttgart, Germany, 1996), pp. 108-111

Review of M. H. Jameson, D. R. Jordan and R. D. Kotansky, A lex sacra from Selinous (Durham, NC: Duke University, 1993) in Classical Review, volume 46 (Oxford, 1996), pp. 281-282

‘Notes on Air: Some Questions of Meaning in Empedocles and Anaxagoras’, Classical Quarterly, volume 45 (Oxford, 1995), pp. 26-29

‘Artillery and Prophecy: Sicily in the Reign of Dionysius 1’, Prometheus, volume 21 (Florence, Italy, 1995), pp. 15-23

‘Meetings with Magi: Iranian Themes among the Greeks, from Xanthus of Lydia to Plato’s Academy’, Journal of the Royal Asiatic Society, Third Series, volume 5 (London, 1995), pp. 173-209

Review of C. A. Huffman, Philolaus of Croton: Pythagorean and Presocratic (Cambridge: Cambridge University Press, 1993) in Classical Review, volume 44 (Oxford, 1994), pp. 294-296

‘From Pythagoras to the Turba philosophorum: Egypt and Pythagorean Tradition’, Journal of the Warburg and Courtauld Institutes, volume 57 (London, 1994), pp. 1-13

‘Empedocles’ Sun’, Classical Quarterly, volume 44 (Oxford, 1994), pp. 316-324

‘Greeks, Shamans and Magi’, Studia Iranica, volume 23 (Paris, 1994), pp. 187-198

‘Empedocles and his Interpreters: The Four-Element Doxography’, Phronesis, volume 39 (Assen, Netherlands, 1994), pp. 235-254

‘The Christian Aristotle: Theological Interpretation and Interpolation in Medieval Versions of On the Heavens‘, Le Muséon, volume 107 (Louvain-la-Neuve, Belgium, 1994), pp. 195-205