"What force do you suppose holds individuals in the different focus levels after death?"
"The [Earth Core] Crystal's field?"
"You're getting warm."
"The Crystal's field denssity has something to do with it, doesn't it?"
"Getting warmer."
Then all of a sudden it hit me.
"Spirit Gravity, the field is Spirit Gravity!"
"You're getting hot!" the tour guide exclaimed.

"Each focus level is a range of crystal field density, a range of pull on the spirit body by Spirit Gravity. The rings Bob Monroe speaks of in his books are arbitrary divisions of the strength of pull of the Earth Core Crystal on the nonphysical bodies of the dead. Now wait a second. The nonphysical bodies of the dead are somehow like hot air balloons. I'm getting that from somewhere. The density of a nonphysical body is variable. If it is less dense it floats higher, more dense it floats lower. Hmmm... I've got it! The more a person considers itself a physical world Being, the more dense it is and the lower it floats. So a ghost is a person who still thinks it's living in the phsycial world, so it's ... close to physical world reality. A person who's conscious of being more of a Spirit Being floats higher."

B. Moen