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

The Autobiography of a Yogi

Sabbatai Ṣevi: The Mystical Messiah, 1626–1676

Giordano Bruno: Philosopher/Heretic

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

Correspondence, 1939 - 1969

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

The Correspondence of Hannah Arendt and Gershom Scholem

Autobiography of a Spiritually Incorrect Mystic

I Am Dynamite!: A Life of Friedrich Nietzsche

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

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

Ludwig Wittgenstein: The Duty of Genius