Twenty thousand years ago the family was the social unit. Now the social unit has become the world, in which it may truthfully be said that each person's welfare affects that of every other.


The religion of a scientist: an address by Arthur H. Compton... (ed. 1938)


Twenty thousand years ago the family was the social unit. Now the social unit has become the world, in which it may truthfully be said that each...

Twenty thousand years ago the family was the social unit. Now the social unit has become the world, in which it may truthfully be said that each...

Twenty thousand years ago the family was the social unit. Now the social unit has become the world, in which it may truthfully be said that each...

Twenty thousand years ago the family was the social unit. Now the social unit has become the world, in which it may truthfully be said that each...