1510. Every spirit-and still more every society of spirits-has his own sphere from his principles and persuasions, which sphere is that of his principles and persuasions. Evil genii have a sphere of cupidities, and in their case the sphere of principles and persuasions is such that when acting upon another it makes truths to be as falsities and calls forth all things that are confirmatory, so as to induce a belief that falsities are truths, and that evils are goods.
 This has shown how easily a man may be confirmed in falsities and evils, if he has no belief in the truths which are from the Lord. Such spheres are dense in proportion to the nature of the falsities. These spheres can by no means agree with the spheres of spirits who are in truths. If they approach, there arises a repugnance; and if by permission the sphere of falsity prevails, the good come into temptation and into anxiety. I have also perceived the sphere of unbelief, which is such that those who are in it do not believe anything that is said, and scarcely what is presented to their sight. There is also the sphere of those who believe nothing but what they apprehend by the senses.
 A certain one was seen by me, clothed in something dark, sitting at a mill, as if grinding meal, and at the side were seen little mirrors, and I afterwards saw some things produced by phantasy,, but which were aerial. I wondered who he was; but he came to me and said that he was the one who sat at the mill; and that he had such ideas, as that all things whatsoever are only phantasies, and that nothing is real. For this reason he had become such as he was.