448. Is the faculty of second-sight a permanent one?
"The faculty of second-sight is permanent, but its exercise is not. In worlds less material than yours, spirits free themselves from matter more easily, and enter into communication with one another simply by thought, without, however, excluding the use of articulate speech. In those worlds, second-sight is, for the greater part of their inhabitants, a permanent faculty. Their normal state may be compared to that of lucid somnambulism among you; and it is for this reason that they manifest themselves to you more easily than those who are incarnated in bodies of a grosser nature."