990. These spirits afterwards spoke with me; but they spoke as a single person who reported to me that he had known and been able to speak in various tongues, as in the primitive church, and he wanted to explain how it was done. This he also said, and with persuasion, but I am doubtful whether it was so. He was of this nature, because these spirits want to know all things, and are eager to explain them according to their own phantasies, persuading themselves that it is so. Wherefore they are of that type of men who suppose that they know the causes of all things, and so are persuaded and believe in their existence.