1 3 2 THE ME THOD OF DAR WIN. 



No one was more thoroughly convinced of the 

 necessity of clear-cut theory for accurate obser- 

 vation; and he frequently expressed himself to 

 that effect. His son says of him, "He often 

 said that no one could be a good observer unless 

 he was an active theorizer. " 1 He said him- 

 self, " I am a firm believer that without specula- 

 tion there is no good and original observation." 2 

 " It is an old and firm conviction of mine that 

 the naturalists who accumulate facts and make 

 many partial generalizations are the real bene- 

 factors of science. Those who merely accumu- 

 late facts I cannot very much respect." 3 



1 Life and Letters, Vol. I. p. 126. 



2 Ibid., p. 465. 



8 Ibid., Vol. II. p. 21. 



