THE CROWN OF EVOLUTION 161 



As a rule, however, best choices have prevailed. These 

 have drawn men ever closer together. From being scattered 

 savages, fighting each other for life, human beings have 

 gradually gathered in larger and more friendly groups, until 

 to-day we have cities where thousands, even millions, of 

 people live together and depend upon each other. 1 



Moreover, as groups grew larger during the ages the notion 

 of family life also grew ; and now, in all civilized countries, 

 the family is recognized as the fundamental unit of society. 

 To form it we have a man, his wife, and their children. 



1 For description of the way in which country towns are turned into 

 crowded cities, see the first three chapters of " Town and City.'' 



