Lacking demonstrations of their existence , their existences and natures are widely debated , independently of the philosophy of mind .
Purported non-mental non-physical entities include things such as gods , angels , demons , and ghosts .
Lacking demonstrations of gods ' existence , gods ' existences and natures are widely debated , independently of the philosophy of mind .
Purported non-mental non-physical entities include things such as gods , angels , demons , and ghosts .