214 MAN, ^THE ANIMAL 



may synthesize a product that will contain food 

 energy for man and thus be able to supply such a 

 need as sugar which heretofore has come only 

 from plants. This is one of the progressive possi- 

 bilities in the domain of metabolism. As marvel- 

 ous as all such triumphs of the human mind are, 

 they go no further than to help man to supply 

 more readily an unchangeable and unmodifiable 

 need. 



The human family in one form or another ante- 

 dates all human history. It had its beginning with 

 the advent of paleolithic man. From this time 

 until the present, a period of time for which the 

 human mind has no adequate measure, there has 

 been a slow change in the recognition that has 

 been given to woman until in the higher forms 

 of civilization the family is regarded as a sacred 

 relation and protected by custom and law. Out 

 of this relation one transcendent obligation has 

 crystallized, — the sacred privilege of begetting 

 children. This ideal is in marked contrast to that 

 found among the followers of Islam where sexual 

 satisfaction for man dominates. 



This ideal which is a distinct feature, especially 

 of the English-speaking races, imposes a good 

 deal of self-restraint but in all of these changing 

 ideals from the age of first fossil man until the 

 present, there has been no modification of the law 

 of biogenesis, — no substitute for the natural 



