Common to many traditions is the idea that, in addition to a spectrum of consciousness, there is also a spectrum of gross, to subtle, to causal forms of mass-energy. But what exactly is subtle energy? How does it work, where does it come from, and how does it fit into our scientific understanding of the physical universe? This excerpt suggests a coherent and comprehensive theory of the many approaches to subtle energies, their origin, their nature, and their development.

“It is not that these energy fields are radically meta-physical, because if they were, then all of these fields (because they would not in any way be bound to physical objects), could and would be surrounding all physical objects, whereas in fact, these fields only emerge with (and surround) material objects of a corresponding degree of complexity.” –Ken Wilber