3 7 6 Problems of Organic Adaptation 



current theories may not suffer a similar fate. But to certain 

 theories in one form or another we come back again and 

 again, and always they are more secure. This is especially 

 true of the underlying idea in the theory of Darwin, that 

 master of those who interpret Nature. 



But whether we have reached any satisfactory solution 

 of evolution problems or not, we know at least that these 

 problems are being attacked in the only possible scientific 

 way, viz., by observation, analysis, and experiment. Doubt- 

 less some of these great problems will always remain un- 

 solved, for Nature is infinite. It is not the possession of 

 perfect truth, but its pursuit, which falls to our lot and fills 

 up the measure of our lives; and we would not have it other- 

 wise, "for to travel hopefully is a better thing than to arrive, 

 and -the true success is to labor." 



