2927. Spirits, even if they had not been instructed during life, appropriate to themselves all mankind's knowledge as if they had been instructed
[Take] only as an example, several times when I had done an arithmetic calculation in my head, as they say, then spirits were able to do this on their own-something well known to me from experience. Likewise with regard to other sciences, whatever they may be, if a person is practiced in them, a spirit possesses them as his own, even if he had learned nothing of them in life.