The nation behaves well if it treats its natural resources as assets which it must turn over to the next generation increased, and not impaired, in value.

There is nothing so American as our national parks. The scenery and the wildlife are native. The fundamental idea behind the parks is native. It is, in brief, that the country belongs to the people, that it is in process of making for the enrichment of the lives of all of us. The parks stand as the outward symbal of the great human principle.

Far and away the best prize that life has to offer is the chance to work hard at work worth doing.

A man who has never gone to school may steal from a freight car; but if he has a university education, he may steal the whole railroad.

Nobody cares how much you know, until they know how much you care.

Old age is like everything else. To make a success of it, you've got to start young.