ii USELESS KNOWLEDGE 43 



know all things, and good enough to place his knowledge 

 at their disposal. 



They seem to me as foolish as they are selfish. 



No doubt ; still there is that germ of truth about 

 their action which we saw. Whatever knowledge cannot 

 be rendered somehow useful cannot be esteemed real. 



Alas, that it should be so ! 



I do not on the whole regret it, although I can see it 

 must annoy you to be considered as part of the non 

 existent of which you always thought so meanly. But 

 really I must be going, and return to my Cave to 

 convince, if possible, my fellow Troglodytes that you 

 still live and think, and to impress on them, if I can, 

 the importance of the &quot; two-world problem,&quot; both for 

 its own sake and as an illustration of the truth of 

 Pragmatism. 



