6815. I have been allowed to introduce into their minds the question of whether or not they wished to make any use of all the knowledge they possessed. For it is not sufficient to take delight simply in knowing, because knowledge looks towards useful services, and such services must be the end in view. I have intimated to them that knowledge by itself is not useful to them but will be useful to others with whom they may be willing to share it. It is not at all suitable for a person who wishes to be wise to stop at simply possessing knowledge, for knowledge is merely the means to an end; it should serve as the means to discover the services that ought to be performed by people in their lives. But those spirits have said in reply that they take delight in knowledge and that knowledge by itself is useful to them.