Memoranda for Materialists 61 



insufficiency and narrowness have to be dis- 

 played. 



It will be probably instructive, and it may 

 be sufficient, if I show that two great leaders 

 in scientific thought (one the greatest of all 

 men of science who have yet lived), though 

 well aware of much that could be said 

 positively on the materialistic side, and very 

 willing to admit or even to extend the 

 province of science or exact knowledge to 

 the uttermost, yet were very far from being 

 philosophic Materialists or from imagining 

 that other modes of regarding the universe 

 were thereby excluded. 



Great leaders of thought, in fact, are not 

 accustomed to take a narrow view of 

 existence, or to suppose that one mode of 

 regarding it, or one set of formulae expressing 

 it, can possibly be sufficient and complete. 

 Even a sheet of paper has two sides : a 

 terrestrial globe presents different aspects 

 from different points of view ; a crystal has 

 a variety of facets ; and the totality of 

 existence is not likely to be more simple than 



