The Spirits' Book
Book Two - The Spirit World
Chapter X - Spirit Occupations and Missions
567. Do spirits ever participate in our occupations and pleasures?
“Ordinary spirits, as you call them, do. They are always around you, and have a role in everything that you do (which may be more or less active). They do this to motivate men and women in the different walks of life, and to rouse or curb their passions.”
Spirits are interested in this world in proportion to their elevation or inferiority. Higher spirits have the power of looking into the smallest details of things, but only do so when they think it is useful to progress. Lower ranking spirits attribute a degree of importance to such things in proportion to what is left of their memory of this world and material notions.