368. Does a spirit exercise his faculties in full freedom after his union with a body?
"The exercise of faculties depends on the organs which serve them for instruments. Their exercise is weakened by the grossness of matter."
-- It would appear, then, that the material envelope is an obstacle to the free manifestation of a spirit's faculties, as the opacity of ground glass is an obstacle to the free emission of light?
"Yes, an obstacle which is exceedingly opaque."
The action exercised upon a spirit by the gross matter of his body may also be compared to that of muddy water, impeding the movements of the objects plunged into it.