The Tao of Physics
Capra completed the book in December 1974, months before the Fundamental Fysiks Group formed in San Francisco in May 1975. He then became one of the group's leading members, and the historian David Kaiser treats the book's success as part of that circle's story, which mixed serious quantum research with countercultural spirituality.
Fritjof Capra, The Tao of Physics (1975); David Kaiser, How the Hippies Saved Physics (2011), on the Fundamental Fysiks Group
A 1975 bestseller arguing that modern physics converges with Eastern mysticism, the founding text of what is now called quantum mysticism.