HUMAN LIFE 

 AS THE BIOLOGIST SEES IT 



i 



INTRODUCTORY 



WHILE engaged in the work of Mr. 

 Hoover s relief organizations I saw a good 

 deal at very close range of the behavior of 

 men at war. I saw a constant struggle 

 in the case of some of these men in posi 

 tions of authority between two elements 

 in their make-up ; a brute element inherent 

 in them as a biologically inherited ves 

 tige of prehistoric days, and a strictly 

 human element more recently acquired 

 and transmitted to them by education 

 and social inheritance. Sometimes one ele 

 ment dictated their behavior, sometimes 

 the other. Sometimes, unfortunately, 

 the element of education reinforced the 

 element of brute inheritance. The exist- 

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