1967. Much has been said about the visions of certain persons who have declared that they have seen many things, and who did see them, but in phantasy. I have been instructed about them, and it was likewise shown how they take place. There are spirits who by means of phantasies induce appearances that seem to be real. For example, if anything is seen in shadow, or in moonlight, or even in daylight, if the object be in a dark place, these spirits keep the mind of the beholder fixedly and continually in the thought of someone thing, be it an animal, a monster, a forest, or any other thing; and so long as the mind is held in this thought, the phantasy is increased, and it grows to such a degree that the person is persuaded, and sees just as if the things themselves were there, whereas they are nothing but illusions. Such things befall those who indulge much in fancies, and are subject to infirmity of mind, and have thereby become credulous. These are visionaries.