24. The spirits from the world of Mercury do not keep to any one place, or within the groups of spirits belonging to one world, but travel through the universe. This is because they answer to the memory of facts, which they are continually trying to enrich. So they are permitted to travel around and acquire for themselves knowledge wherever they can. On their travels, if they meet spirits who love material, that is, bodily and earthly matters, they avoid them and go off somewhere where they do not hear such subjects mentioned. This is a proof that their minds are raised above the level of sense-impressions, so that they enjoy inward illumination. I was also allowed to perceive this for myself, when they were near and talking with me. I noticed then that I was being withdrawn from sense-impressions, so much so that my physical sight started to become dim and blurred.