Across the broad span of wisdom traditions, one encounter is of key significance: some direct access or contact with the ground of being.
Even in this secular age, dominated as we are by the materialistic, reductionist paradigm of western science, these transcendent experiences still occur, even amongst members of the scientific community.
In the 1970s, a series of books, such as The Tao of Physics and The Dancing Wu Li Masters, explored the supposed synergies between quantum theory and the wisdom traditions. These well-meaning books spawned something of an industry and associated quantum hype where quantum theory was portrayed as supporting, or worse justifying, certain worldviews.
Typically, these approaches drew on the Copenhagen interpretation, the idea that the mind causes quantum state collapse and the physics of entanglement and related them to the experience of non-duality, wholeness and immersion in a universal mind characteristic of spiritual insight.