INTRODUCTION. 4Q5 



showed the deepest intimacy with the mechan- 

 ical element of Nature ; his mind was born in 

 some deep unity with gravitation, whose law 

 was his own as well as that of the Cosmos. 

 Bnt this realm's limit seemed also his spirit *s 

 boundary, his diacosmical genius was by no 

 means so transcendent, and in the Biocosmos 

 he has hardly left a trace. On the other hand 

 Darwin's very soul was biocosmical, and hence 

 evolutionary; he hardly felt the inner psy- 

 chical throb of the Cosmos or Diacosmos as 







great divisions of Nature, or in one of their 

 lesser compartments ; he was the supreme biol- 

 ogist who lived on intimate terms with life 

 whose soul he caught and voiced in his doc- 

 trine of Evolution. 



Suggestive in a number of points is the 

 comparison between Newton and Darwin, the 

 two supreme scientists of the English-speak- 

 ing race, if not of all Europe. Each in his 

 own way sought and formulated the unity of 

 Nature in one of her largest phases. Newton 

 placed all the material bodies of the physical 

 Universe under one law, that of gravitation, 

 which the sun and stars obey as well as a bit 

 of earth-dust. Thus the separated Cosmos he 

 unified under an universal principle, and made 

 it truly a part of the science of inorganic Na- 

 ture. Darwin likewise performed a mighty act 

 of unification through his law of organic evo- 



