- How to Be an Existentialist: or How to Get Real, Get a Grip and Stop Making Excuses
- The Existentialist's Guide to Death, the Universe and Nothingness
- How To Be A Philosopher: or How to Be Almost Certain that Almost Nothing is Certain
- Sartre: A Guide for the Perplexed
- Existentialism and Excess: The Life and Times of Jean-Paul Sartre
- Sue Monk Kidd
- Leo Tolstoy
- Charles F. Stanley
- Dalai Lama XIV
- Jon Kabat-Zinn
- Henri J.M. Nouwen
- Anna Quindlen
- Elisabeth Kübler-Ross
- Raymond A. Moody Jr.
- Sally Jenkins
- Katherine Ketcham
- Lance Armstrong
- Larry Dossey
- David Kessler
- Bo Lozoff
- William Cope Moyers
- Thomas Zanzig
- James R. Lewis
- William Patrick
- Joey Kramer