The Wisdom of the Overself shows in what relation the planetary Overmind and the individual ego-mind stand to each other, and the nature and extent of the "interference" set up by the individual. The contact cannot be established by the limited operations of intellect or by the emotional ecstasies of the mystic, as an entirely new faculty has to be brought into play. This has been called "insight" (following the terminology of the Mongolian Yaka-kulgan school). It is a transcendental fusion of thought, feeling, being, and act which yields an "isolation," as it were, of the principle of awareness. When this is done one, realizes how the electrical field operating in the colloidal structure of nerve cells can only provide conditions for the expressions of this principle--that is to say, for setting up a limited representation of it. In realizing this awareness principle as it is in itself, the whole system of memories, energies, and tendencies which compose the dual, individual, world picture becomes detached and the neurological mechanism with it. One then perceives that the scientific procedure which would set the physical apart from the mental must finally fail because of its dualism, even as the materialistic procedure which would immerse the mental in the physical must fail because the five senses can be banished in yoga trance while consciousness is kept.
-- Notebooks Category 12: Reflections > Chapter 5: The Literary Work > # 214