The mind-body problem has vexed philosophers and scientists for ages. How do these two relate? Mysticism may hold a key to penetrating the problem to its source.
Consciousness may be the "inner" experiential (spiritual) side of the "outer" material (physical) cosmos, these being two irreducible aspects of One thing.
The hard problem of consciousness may lead us to an irreducible mysticism in the nature of the mind and body, namely that they are two sides of the very same one thing.