* The Circle of Reason
* The Dead and the Living
* The Sacred Promise
* The Broken Sun
Non-Fiction:
* Science and Spirituality: A Dialogue
* The Yoga of Consciousness: A Scientific Approach
* The Secrets of the Vedas: A Modern Interpretation
* The Power of Meditation: A Practical Guide
Also, he has contributed articles to the following publications:
* New Scientist
* The Guardian
* The Times Literary Supplement
* Wired