I spoke with spirits about the fact that the sciences contribute nothing to salvation, only let there be higher knowledge from the Word of the Lord; and that to make a comparison, they are like a knowledge of the human body regarding anatomical facts, the blood, and the structure of all the rest of the parts-this knowledge does nothing toward the preservation of health. So those who understand nothing about these things still live as healthy as those who have devoted themselves very much to such studies. It is similar with mental health, which can be much greater with those who know nothing about the intellect and its faculties than one who has studied them throughout life, who is confused by scholarly hypotheses. 1748, 4 Aug.