6814. Because it is material they avoid the use of verbal speech, and therefore I have been unable to talk to them except by means of a kind of active thinking. Since their memory consists of real things, not of merely material images, it is more readily equipped to supply thought with objects; for thought on a level above that which calls on material images needs for its objects real things that are devoid of material associations. But in spite of this, the spirits belonging to Mercury are endowed with little power of judgement. They take no delight in matters of judgement or in conclusions formed from items of knowledge; for items of knowledge pure and simple are what delight them.