(2005) Book: "No god but God: The Origins, Evolution, and Future of Islam". London: William Heinemann Ltd. ISBN-10: 0434012629; ISBN-13: 978-0434012626
(2013) Book: "Zealot: The Life and Times of Jesus of Nazareth". New York: Random House. ISBN-10: 140006922X; ISBN-13: 978-1400069224