9. It is also necessary to figure to one’s self that this perception is not limited by extent of space, but that it comprehends penetration in all things. It is, we repeat, an inherent faculty proportioned to the state of dematerialization. This faculty is weakened by incarnation, but not completely deadened, because the soul has not been enclosed in the body as in a box. The incarnated being possesses it, although in a lesser degree than when free from matter; it is this that gives to some men a penetrating power, which is totally lacking in others, greater justice in a moral point of view, and a quicker comprehension of things beyond the material world.
Not only the mind perceives, but it remembers that which it has been seen in a spiritual state; and this remembrance is like a picture traced on its thoughts. In incarnation it sees but vaguely, as through a veil; in a liberated state, it sees and conceives clearly. The principle of sight is not outside itself, but within it: thus there is no need of our exterior light. By moral development the circle of our ideas and conception is enlarged. By the gradual dematerialization of the perispirit the latter is purified of the coarse elements which affect the delicacy of the perceptions, whence it is easy to comprehend that the extension of all the faculties follow spiritual progress.