ELECTRIC THEORY OF MATTER 307 



in science, may endeavour to throw dust in the 

 eyes of earnest workers, but the progress of the 

 world will continue to be made, not by those who 

 destroy and puU to bits, but by those who create 

 and put together. In Science, as in Letters, we may 

 say with Matthew Arnold that, " To have the sense 

 of creative activity is the great happiness and proof 

 of being ahve, and it is not denied to criticism to 

 have it ; there is the promised land towards which 

 we can only beckon. That promised land it may 

 not be our lot to enter, and we may die in the 

 wilderness; but to have desired to enter it, to 

 have saluted it from afar, is already the best dis- 

 tinction amongst contemporaries : it wiU certainly 

 be the best title to esteem with posterity." 



X 2 



