Philosophy / Spirituality:

• The Tao Te Ching by Lao Tzu
• The Bhagavad Gita
• Meditations by Marcus Aurelius
• A Confession by Leo Tolstoy
• The Screwtape Letters by C.S. Lewis
• Man's Search for Meaning by Viktor E. Frankl
• On Having No Head: Zen and the Rediscovery of the Obvious by Douglas Harding
• The Experience of No-Self: A Contemplative Journey by Bernadette Roberts
• What Is Self? by Bernadette Roberts
• Intelligence Beyond Thought: Exploding the Mechanism of Mind by Dada Gavand
• Waking Up: A Guide to Spirituality Without Religion by Sam Harris
• LSD and the Mind of the Universe: Diamonds from Heaven by Christopher M. Bache

Poetry:

• The Essential Rumi by Rumi
• Leaves of Grass by Walt Whitman
• The Prophet by Kahlil Gibran

Graphic Novels / Comics:

• The Adventures of Tintin series by Hergé
• Calvin and Hobbes series by Bill Watterson