THE EVOLUTION OF MAN 



opinion as to the nature of the active principle 

 of development. The general mistake of con- 

 founding this special field of research with the 

 whole of Darwinism may perhaps be pardonable 

 when we remember that Darwin himself has 

 speculated a great deal about these "laws/"' and 

 whoever wishes to write on these things, to dis- 

 cuss them, either for or against Darwinism, and 

 instruct others about them, should at least be 

 sufficiently trained in scientific thought to dis- 

 tinguish between these two departments of 

 science. 



Darwin tried in his time to give us a clear 

 formulation of the laws of evolution, by which 

 he did not attempt to prove that all living beings 

 developed out of one another, but why they did. 

 If this formulation is true, it is a matter of 

 course that it would also comprise man and show 

 us why he had to develop. 



Darwin's theory is based on the following line 

 of thought. Here we have a simple, primitive 

 animal form. It is so far adapted to external 

 conditions and has developed such faculties that 

 it can exist, maintain itself, and propagate its 

 kind. But now a long space of time elapses. 

 We then find in place of this animal form a new 

 one, which is much better adapted to the same 



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