186 THE LIMITATIONS OF SCIENCE 



tulate a fourth dimension to space we can deduce per- 

 fectly logical laws for a mechanical system that are 

 quite different from the laws of ordinary mechanics. 

 And the universe, constructed on this principle, is a 

 very beautiful and interesting one. It is the privilege 

 of mathematicians to deal with symbols; the physical 

 universe is no more important to them than any other 

 universe which can be developed symbolically. The 

 trouble occurs when the distinction between the real or 

 physical universe and symbolical or metaphysical uni- 

 verses is obliterated in the minds of men of science. 



