On the Mystical Shape of the Godhead: Basic Concepts in the Kabbalah

Meditations

Origins of the Kabbalah

Story of Philosophy

The Messianic Idea in Judaism: And Other Essays on Jewish Spirituality

Giordano Bruno: Philosopher/Heretic

Sabbatai Ṣevi: The Mystical Messiah, 1626–1676

12-Step Workbook for Recovering Alcoholics, Including Powerful 4th-Step Worksheets: 2015 Revised Edition

Sri Guru Teg Bahadur Ji: On 400th Birth Celebrations of Sri Guru Teg Bahadur Ji - 9 World Languages

Correspondence, 1939 - 1969

Autobiography of a Spiritually Incorrect Mystic

The Correspondence of Hannah Arendt and Gershom Scholem

I Am Dynamite!: A Life of Friedrich Nietzsche

How to Live: A Life of Montaigne in one question and twenty attempts at an answer

Marx's General: The Revolutionary Life of Friedrich Engels

Is Belief in God Good, Bad or Irrelevant?: A Professor and a Punk Rocker Discuss Science, Religion, Naturalism Christianity

The Price of Peace: Money, Democracy, and the Life of John Maynard Keynes

The Harvard Psychedelic Club: How Timothy Leary, Ram Dass, Huston Smith, and Andrew Weil Killed the Fifties and Ushered in a New Age for America