The Divine Spark: A Graham Hancock Reader: Psychedelics, Consciousness, and the Birth of CivilizationEbookThe Divine Spark: A Graham Hancock Reader: Psychedelics, Consciousness, and the Birth of CivilizationbyRussell BrandRating: 5 out of 5 stars5/5Save The Divine Spark: A Graham Hancock Reader: Psychedelics, Consciousness, and the Birth of Civilization for later