The Evolution of Organisms 181 



eludes all the multitudinous efforts for self and 

 others between the poles of love and hunger; that 



self-sacrifice and love are factors in evolution as 

 well as self-assertion and death; that existence for 

 many an animal means the well-being of a socially- 

 bound or kin-bound creature in a social environ- 

 ment; that egoism is not satisfied until it becomes 

 altruistic ? 



Emotional Value of the Evolutionary Picture. 

 Finally, as to the aesthetic value of the evolution- 

 ary picture, let us recall Darwin's well-known 

 words: "To my mind it accords better with what 

 we know of the laws impressed on matter by the 

 Creator, that the production and extinction of the 

 past and present inhabitants of the world should 

 have been due to secondary causes, like those de- 

 termining the birth and death of an individual. 

 When I view all beings, not as special creations, 

 but as lineal descendants of some few beings who 

 lived before the first bed of the Silurian was de- 

 posited, they seem to me to become ennobled." 



' There is a grandeur in this view of life, with its 

 several powers having been originally breathed by 

 the Creator into a few forms or into one, and that 

 while this planet has gone cycling on, according to 

 the fixed law of gravity, from so simple a beginning 

 endless forms most beautiful and most wonderful 

 have been and are being evolved." 



