AS TO OURSELVES 



organ, the brain, for man's brain and the 

 chimpanzee's are so much alike that it 

 takes an anatomist to tell the difference. 

 But the same conscious personality within 

 then says, I know that I am a real animal, 

 but I also know that I am infinitely more 

 than an animal, and there is the end 

 of it 



^Turning next to the subject of Evolu- 

 tion, to find what it really means, we per- 

 ceive at once that instead of being an effi- 

 cient cause, from the very nature of the 

 case it is no cause at all. ^ The running of a 

 stream downhill is not the cause of its so 

 running, for that is the earth's attraction 

 of gravitation. And just so the long 

 stream of the evolution of physical life 

 is not caused by evolntign.y Science, there- 

 fore, is quite right in seeking for the cause 

 of evolution, and despite frequent fail- 

 ures hitherto, she should keep on in this 

 quest, for the longer she does so the less 

 197 



