AS THE BIOLOGIST SEES IT 



study of the behavior and evolution of 

 kinds of life lower than human-kind. 

 Some biologists have helped spread this 

 impression. 



But they do wrong to do this. They are 

 misled by their desire for simplist or 

 monist explanations. It is a great econ- 

 omy of thought, a good example of the 

 Occam's Razor principle, to push toward 

 a monist explanation of natural phenom- 

 ena. The German war philosophy, if it 

 was an honest philosophy and with many 

 Germans it was honest, was a monist 

 philosophy. If natural selection can and 

 does explain the evolution of plant and 

 animal life and if man is only a form, 

 rather unusually complex, of animal life, 

 then his evolution, too, is to depend on 

 this ruthless all-powerful natural selec- 

 tion. 



Well, even granting both premises 

 and the first one cannot be granted 

 the conclusion is wrong: man has more 

 in his life than is in the life of sea-urchins, 

 birds, or apes. And this more does 

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