Stalking the Wild Pendulum: On the Mechanics of Consciousness - Itzhak Bentov, pub. Inner Traditions International or Rider (1988 or 1978). See review in PS Magazine.
The Physics of Consciousness: The Quantum Mind and the Meaning of Life - Evan Harris Walker, pub. Perseus 2001
Physics of the Soul: The Quantum Book of Living, Dying, Reincarnation and Immortality - Amit Goswami, pub. Hampton Roads 2001
Quantum Theory David Bohm, pub. Dover Publications 198.9
Mathematical Foundations of Quantum Mechanics (Princeton Landmarks in Mathematics and Physics) - John von Neumann, pub. Princeton University Press 1996. A key text, but you need to be a mathematician to understand it. Not for the general reader.
The Elegant Universe - Super Strings, Hidden Dimensions, and the Quest for the Ultimate Theory - Brian Greene, pub. 2000 Vintage. This is not a spiritual book in the strict sense. But I listed it here as we are closer to the universe! Winner of The Aventis Science Book Prize 2000. "It's a delightful, lucid voyage through modern physics that brings us closer to understanding how the universe works". Highly recommended.
