- Western Esotericism: A Guide for the Perplexed
- New Age Religion and Western Culture: Esotericism in the Mirror of Secular Thought (S U N Y Series in Western Esoteric Traditions)
- Hermetic Spirituality and the Historical Imagination: Altered States of Knowledge in Late Antiquity
- Esotericism and the Academy: Rejected Knowledge in Western Culture
- Hidden Intercourse: Eros and Sexuality in the History of Western Esotericism (Aries)