CONCLUSIONS ABOUT SYSTEMATICS AND HISTORY IN 



GENERAL 



WE have finished our analysis of the history of mankind 

 as the only instance of an historical biological process 

 that is actually known to exist and is not only assumed 

 hypothetically. 



What we have learnt from this analysis, though certainly 

 important in itself, has not afforded us any new result for 

 theoretical biology. 



The history of mankind is proved to be of philosophical 

 importance, at present, so far only as it offers instances 

 to the science of psychology ; besides that it may be of 

 value and importance to many conditions of practical and 

 emotional life. 



There is only one science, and only one kind of logic 

 too. "In one sense the only science" that was the 

 predicate attached to natural sciences by Lord GifFord, as 

 you will remember from our first lecture. It is not 

 without interest to note that at the end of our course of 

 this year, we find occasion to realise on what a deep insight 

 into logical and philosophical relations that sentence was 

 grounded. 



We now leave the theory of human history, which has 

 been to us nothing more than a branch of biological 



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