An Introduction to a Biology 



the tower and reflect, if we are to make progress in biology 

 we must descend to the road. But before we return to our 

 investigations, let us make certain rules which will keep 

 us from going astray. Many valuable rules could be made. 

 But I will suggest only two, which deal with what we have 

 been discussing this evening. One is : To keep description 

 absolutely independent of interpretation. The other is : To 

 remember that what you arrive at by interpreting the thing 

 you have described is not what you see underneath it, but 

 what you read into it. 



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