Only as a matter to be borne in mind, not as a proposition, it should be mentioned that when I read several items from my writings on a certain internal organ of the body, together with the hypotheses inferred from them, angels were able to tell very well whether a thing was the truth or not, which I in turn was enabled to learn from them. Thus they know in anatomical, in physical, in philosophical material, what is true, and correctly developed, and this without previous knowledge through the sciences. 1748, 23 February.