The Spirits' Book
Book Two - The Spirit World
Chapter VIII - Emancipation of the Soul
437. Since the soul transports itself, how is it that somnambulists feel the heat or cold of the place where their souls are located, which is sometimes very far away from the body?
“Their souls have not entirely left their bodies and are still attached by the link that unites them. This link is the conductor for sensations. When two individuals in two different cities use electricity to correspond with each other, electricity is the link between their thoughts and it enables them to communicate with one another as though they were right next to each other.”