Henry Fairfield Osborn, Men of the Old Stone Age: Their Environment…
“ The rise and fall of cultures and of industries, which is at this very day the outstanding feature of the history of western Europe, was fully typified in the very ancient contests with stone weapons which were waged along the borders of the Somme, the Marne, the Seine, and the Danube. No doubt, each invasion, each conquest, each substitution of an industry or a culture had within it the impelling contest of the spirit and will of man, the intelligence directing various industrial and warlike implements, the superiority either of force or of mind. ”
