A Scheme of Heaven: The History of Astrology and the Search for our Destiny in Data

A Scheme of Heaven: The History and Science of Astrology, from Ptolemy to the Victorians and Beyond

Magic in Merlin's Realm: A History of Occult Politics in Britain

The Four Loves

Psychedelic Integration: Psychotherapy for Non-Ordinary States of Consciousness

The Secret Life of the Mind: How Our Brain Thinks, Feels and Decides

Violence and the Sacred

The Gifts of the Spirit

All of Grace

Grounded: A Journey into the Landscapes of Our Ancestors

Shaping History Through Prayer and Fasting

Preparing for Easter: Fifty Devotional Readings

Christian Reflections

The Tragedy of the Templars: The Rise and Fall of the Crusader States

Surprised by Joy

Compelling Reason

The President's Gardens

Screwtape Proposes a Toast

Shepherds and Butchers

Stalingrad