TBK BKLFA8T ^/)/>/,A 489 



The strength of the doctrine .f evolution consists, not 

 in an experimental demonstration (for the >nhject is 

 hardly accessible to t; of proof), but in its general 



harmony with scientilie thought. Fr..m contrast. 



. it derives enormous relative coa,.ncv. On tlie OI16 

 a theory (if it conlii with any propriety be so 

 called) derived, as were the the., i red to at tin* 



IM -ginning of thi- -s, not from the study of nut n 



but from the observation. <f men a theory which converts 

 the I'ower wliose ^arniont is seen in the \ isihle univrrse into 

 an Artificer, fashioned after the human mo.h-1. ami acting by 

 broken etTorts as man is seen to act. On the other .-Me we 

 have (lie eonception that all we see around us, and all we feel 

 within us thu phenomena of physical nature as well as 

 th>se of the human mind have their unsearchable n.<>H in 

 a cos m ical life, if 1 dare apply the term, an infinitesimal 

 .-pan of which is offered to the investigation of man. And 

 even this span is only knowable in part. We can trace the 

 development of a nervous system, and correlate with it the 

 parallel phenomena of sensation and thought. We see 

 with umloubting certainty that they ir> band in hand. 

 Hut we try to soar in a vacuum the moment we seek to 

 comprehend the connection between them. An Archi- 

 medean fulcrum is here re. pined which the human mind 

 cannot command; and the effort to solve the problem to 

 borrow a comparison from an illustrious friend of mine 

 is like that of a man trying to lift himself by his own 

 waistitand. All that has been said in this discourse is to 

 be taken in connection with this fundamental truth. 

 When "nascent senses" are spoken of, when "the dif- 



tiation of a tissue at first vaguely sensitive all over" 

 is spoken <>f, ami when these possessions and processes are 

 associated with *'the modification of an organism by its 

 environment," the .sum- parallelism, u it limit contaet.or 



approach to contact, is implied. Man the object is 



impassable gulf from man 



There is no motor energy in the human intell- irry 



it without logical rupture, from the one to the other. 



SECTION 9. The doctrine of evolution derives man, in 

 his totality, from the interact ion of o; k nd en\ irou- 



meiiL ::;:.. :i-j!i countless ages pa human under- 



standing, for example- that faculty which Mr. >peuoer 



