170 Outlook to Nature 



evolution teaching on the common outlook to 

 life. 



The new attitude of mind. 



Nothing is more apparent than that the evo- 

 lution type of mind is itself an evolution. It 

 has evolved slowly. The evolution conception 

 was certainly present with the Greeks. In 

 an indefinite way, it began to modify men's 

 opinions long before it finally expressed itself 

 concretely in the works of the great modern 

 naturalists. Its great teachers have been in 

 advance of their time. 



The opinions held by men are so many 

 epochs in the enlarging capacities of the mind. 

 These opinions show as clear a progress of evo- 

 lution as do the changing structures of bones 

 or the modifications of functions. The opposi- 

 tion to evolution is itself a stage in the process 

 of evolution. 



The new natural history. 



In the natural history domain we are rapidly 

 emancipating ourselves from the book dogma 



