6616. The fact that one idea holds so many details within itself has also been proved to me from the experience that whenever I have listened to spirits talking to me I have been able to detect solely from the sound of their voice whether pretence, honesty, friendliness, or goodness flowing from love lay behind their speaking. This is something a person can see in the expression on another's face and can also hear to some extent in his speech. For when a person sees a face expressing gladness to him and hears words expressing agreement, he can tell whether such things contain pretence, or deceit, or cheerfulness owing to natural disposition or else to particular circumstance, or modesty, or friendliness, or madness, and so on. All this is likewise a sign that any idea holds countless details within it. When I have spoken to spirits about these matters some of them were unable to believe them. They were therefore taken to a higher region, from which they spoke to me, saying that they could see countless details within any one idea belonging to my thought. So they believed what I had told them.