Although mountains may guide migrations, the plains are the regions where people dwell in greatest numbers.
Ellsworth HuntingtonHistory in its broadest aspect is a record of man's migrations from one environment to another.
Ellsworth HuntingtonExcept on their southern borders the great northern forests are not good as a permanent home for man.
Ellsworth HuntingtonThus the races, though alike in their physical response to climate, may possibly be different in their mental response because they have approached America by different paths.
Ellsworth Huntington