 The Doors of Perception and Heaven and Hell by Aldous Huxley |  The Perennial Philosophy by Aldous Huxley |  Civilization and Its Discontents by Sigmund Freud |  After Many a Summer Dies the Swan by Aldous Huxley |  On Suicide by David Hume |  The Devils of Loudun by Aldous Huxley |  The Art of Worldly Wisdom by Baltasar Gracian |  The Sublime Object of Ideology by Slavoj Zizek |  An Inquiry Concerning Human Understanding by David Hume |  Existentialism and Human Emotions by Jean-Paul Sartre |  How to Analyze People on Sight by Elsie Lincoln Benedict |  Pensees by Blaise Pascal |  The Book of Not Knowing by Peter Ralston |  The Undiscovered Self by C. G. Jung |  The Birth of Tragedy: Out of the Spirit of Music by Friedrich Nietzsche |  The Birth and Death of Meaning by Ernest Becker |  True Hallucinations by Terence McKenna |  The Act of Creation by Arthur Koestler |  Critique of Judgement by Immanuel Kant |  Irrational Man by William Barrett |