148 GRAND STRATEGY OF EVOLUTION 



and out of his own resources provides the means, and 

 finds the ways, to add his powers to hers. The trans- 

 action is profitable; but the common, or resultant profits 

 go elsewhere than to the partners in the undertaking, 

 chiefly to their common offspring. 



V. The Merging of Parental Altruism into Nature 

 Altruism and Social Altruism 



I. The Larger Creative Values of Bisexual Diverg- 

 ence and Bisexual Cooperation. It is evident that 

 bisexual divergence and bisexual cooperation are essen- 

 tial factors in the constructive processes of evolution, 

 or nature growth. For heredity, in its broader sense, 

 is the reproduction of individual life out of specific 

 germinal materials, supplemented by all the adminis- 

 trative acts of a bisexual life. But not in that alone is 

 comprised the whole creative significance of sex. 



The creative value of a bisexual life, in contrast with 

 asexual life, cannot be limited to the mere function 

 of fertilization; to sexual commerce in chromosomes; 

 or to the resultant expression of that commerce in Men- 

 delian terms of form, color, and numbers. Its full 

 significance is to be found in its ultimate exteasion into 

 much larger social functions. 



Primarily, better cooperation between the two sexes 

 depends on better mutual services, and mutual aggran- 

 dizement in those secondary sexual attributes essential 

 to the perpetuation of themselves in their own imme- 

 diate offspring. 



Secondarily, this parental aggrandizement finds 

 larger outlets for its altruism than family life; for all 

 kinds of individual profits, not merely germinal ma- 



