This latter, however, divorced from knowledge, rarely attained the true exstasis, and tended either to run riot in the lower regions of the invisible worlds, or to lose itself amid a variegated crowd of subtle Superphysical forms, visible as objective appearances to the inner vision-prematurely forced by fastings, vigils, and strained attention-but mostly born of the thoughts and emotions of the seer.
"Esoteric Christianity, or The Lesser Mysteries"
Annie Besant
Every phenomenon of nature can be classed and studied in physics or chemistry or mathematics; the problem, therefore, is not in any way supernatural or Superphysical, but belongs rather to an unknown or an undeveloped branch of physics.
"Manhood of Humanity."
Alfred Korzybski
My guru was reluctant to discuss the Superphysical realms.
"Autobiography of a YOGI"
Paramhansa Yogananda