The Spirits' Book
Book Two - The Spirit World
Chapter VIII - Emancipation of the Soul
452. Is it true that circumstances develop second sight?
“Illness, impending danger or any major disturbance may develop it. The body is sometimes in a state that allows spirits to see what cannot be seen with the human eye.”
Times of crisis and turmoil, powerful emotions, and any causes that stimulate the moral nature may develop the second sight. It seems as if Providence gave us a means of calling upon it. All religious groups and parties subjected to persecution have provided numerous instances of this fact.