110 REPRODUCTION 



care, and the more opportunity for education. This makes 

 it possible for the young to progress faster and more 

 safely than if they had to learn every thing through their 

 own experiences. 



Secondly, the care of j'oung tends to hold the parents 

 together. This is true during the breeding season at least, 

 and thus something of a home or social life is developed. 

 We see this among ants, bees, birds, and the higher 

 mammals. There is no doubt that this adds to the 

 efficiency of a species. 



In the third place, the long period of dependence of the 

 young on the parents tends to develop in the parents 

 themselves the qualities that make better parents of them. 

 Anything that increases their sympathy and disposition 

 to make sacrifices for the offspring w^ill react on the 

 welfare of the offspring and for the good of the species. 

 It is possible that the good points of parents themselves 

 have thus been increased from generation to generation. 



The highest human sentiments cluster about marriage, 

 parenthood, and care of young, and these play a most 

 important part in the progress of mankind socially and 

 morally. Indeed all social progress is closely related to 

 these fundamental capacities and tendencies in connection 

 with reproduction and care of young. 



