In Europe we have cities wealthier and more populous than yours and we are not happy. You dream of your posterity; but your posterity will look back to yours as the golden age, and envy those who first burst into this silent, splendid Nature.

The national park is the best idea America ever had.

Life is too short to read inferior books.

In Europe we have cities wealthier and more populous than yours and we are not happy. You dream of your posterity; but your posterity will look back to yours as the golden age, and envy those who first burst into this silent, splendid Nature.

Patriotism consists not in waving the flag, but in striving that our country shall be righteous as well as strong.

Three-fourths of the mistakes a man makes are made because he does not really know the things he thinks he knows.

Communication is the key to education, understanding and peace.