TIME AND CHANGE 



do not see is active in the ground underfoot and in 

 the forms of life about us which is the final secret of 

 the origin of man and of all other creatures. This 

 something is the evolutionary impulse, this innate 

 aspiration of living matter to reach higher and 

 higher forms. "Urge and urge," says Whitman, 

 "always the procreant urge of the world." It is in 

 Emerson's worm "striving to be man." This "striv- 

 ing" pervades organic nature. Whence its origin 

 science does not assume to say.^ 



Then the difference in kind between the mind of 

 man and that of the lower orders makes evolution 

 a doubly hard problem. 



Look over the globe and see what a gulf separates 

 man from all other creatures. All the other animals 

 seem akin — as if the product of the same workman. 

 Man, in contrast, seems like an introduction from 

 some other sphere or the outcome of quite other 

 psychological laws; his dominion over them all is 

 so complete and universal. Without their special- 

 ization of structure or powers, he yet masters them 

 all and uses them; without their powers of speed, 

 he yet outstrips them; without their strength of 

 tusk and limb, he yet subdues them; without their 

 inerrant instinct, he yet outwits them; without their 

 keenness of eye, ear, and nose, he yet wins in the 



^ This passage was written long before I had read Bergson's 

 Creative Evolution, as were several others of the same import in 

 this volume. 



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