18. They were asked whether they wished to make any use of their knowledges; for it is not enough to be delighted with knowledges, because knowledges have respect to uses, and uses ought to be the ends of knowledges; from knowledges alone no use results to them, but to others with whom they are disposed to communicate their knowledges; and that it is very inexpedient for any one who wishes to be wise, to rest satisfied with mere knowledges, these being only administering causes, intended to be subservient to the investigation of things appertaining to life: but they replied, that they were delighted with knowledges, and that knowledges to them are uses.