Philosophy in the Islamic World: A Very Short Introduction

Facing Your Giants: God Still Does the Impossible

Byzantine and Renaissance Philosophy: A History of Philosophy Without Any Gaps, Volume 6

Medieval Philosophy: A history of philosophy without any gaps, Volume 4

The Perennial Philosophy: An Interpretation of the Great Mystics, East and West

Philosophy in the Islamic World: A history of philosophy without any gaps, Volume 3

Transcending the Levels of Consciousness: The Stairway to Enlightenment

The Self-Aware Universe

Classical Philosophy: A history of philosophy without any gaps, Volume 1

Garuda Purana

Philosophy in the Hellenistic and Roman Worlds: A history of philosophy without any gaps, Volume 2

The Cost of Discipleship

Ibn Sina (Avicenna): A Very Short Introduction

A History of Religious Ideas, Volume 2: From Gautama Buddha to the Triumph of Christianity, Volume 2

Al-Rāzī

The Power of Myth

Studies on Plotinus and al-Kindi

Fear and Trembling