Primary Sources – Religious

A Study of Dōgen by Masao Abe

Deliverance from Error by Al-Ghazali

The Incoherence of the Philosophers by Al-Ghazali

The Summa Theologica by Thomas Aquinas

The Teaching of Buddha

Institutes of the Christian Religion by John Calvin

The Analects of Confucius

The Vedas compiled by the Dharmic Scriptures Team

On Divine Names & Mystical Theology by Pseudo-Dionysius the Areopagite

The Shōbōgenzō: Volume I by Eihei Dōgen

The Shōbōgenzō: Volume II by Eihei Dōgen

The Shōbōgenzō: Volume III by Eihei Dōgen

The Shōbōgenzō: Volume IV by Eihei Dōgen

Dōgen’s Extensive Record: A Translation of the Eihei Kōroku

The Tibetan Book of the Dead edited by W. Y. Evans-Wentz

The Essence of Christianity by Ludwig Feuerbach

Christian Apologetics by Norman Geisler

Philosophy of Religion by Norman Geisler

The Principia Discordia by Greg Hill and Kerry Wendell Thornley

The Perennial Philosophy by Aldous Huxley

The Guide for the Perplexed by Moses Maimonides

The Mūlamadhyamakakārikā of Nāgārjuna

On Buddhism by Keiji Nishitani

The Upanishads translated by Swami Paramananda

Eastern Religions & Western Thought by S. Radhakrishnan

On the Harmony of Religion and Philosophy by Ibn Rushd (Averroes)

The Incoherence of the Incoherence by Ibn Rushd (Averroes)

Forgotten Truth by Huston Smith

An Introduction to Zen Buddhism by D.T. Suzuki

The Bhagavad Gita translated by Shri Purohit Swami

The New Being by Paul Tillich

The Way of Zen by Alan Watts

Note: Internet Sacred Text Archive hosts an archive of online books about religion, mythology, folklore and the esoteric (including the writings of the early church fathers).