28. Afterwards the spirits of Mercury sent me a long piece of paper of irregular shape, being a number of sheets glued together, which looked to be printed in the sort of type used in this world. I asked whether they had papers like this in their world; they said no, but they knew such papers existed in our world. They were unwilling to say more; but I perceived that they thought knowledge in our world was committed to paper rather than to people, poking fun at us as if papers knew things that people do not. But they were informed what is the truth about this. Some time later they came back and sent me another paper, also printed like the previous one, not glued together and untidy, but clean and neat. They said that they had received further information that in this world papers existed such as this, from which books are made.