1308. Moreover, evil spirits also think in such a way that they think only within themselves, so that they do not permit what they think to pass into the merely corporeal thought. Such thoughts did not appear before me because they are wicked. Wherefore a certain spirit boasted that he could think in such a way that I would not perceive what he thought, supposing that thus he could speak with angels, enter into the thoughts of spirits, and also govern such a sphere of spirits; but this is false, for they think only within themselves, which is easier for a spirit than for a man because the connection is not so continuous.