It is good to realize that if love and peace can prevail on earth and if we can teach our children to honor nature's gifts the joys and beauties of the outdoors will be here forever.

The natural liberty of man is to be free from any superior power on Earth and not to be under the will or legislative authority of man but only to have the law of nature for his rule.

The sway of alcohol over mankind is unquestionably due to its power to stimulate the mystical faculties of human nature usually crushed to earth by the cold facts and dry criticisms of the sober hour.

To be admitted to Nature's hearth costs nothing. None is excluded but excludes himself. You have only to push aside the curtain.

There are no passengers on spaceship earth. We are all crew.

The poetry of the earth is never dead.

Man has lost the capacity to foresee and to forestall. He will end by destroying the earth.

Trees are the earth's endless effort to speak to the listening heaven.

Earth and sky woods and fields lakes and rivers the mountain and the sea are excellent schoolmasters and teach some of us more than we can ever learn from books.

Delicious autumn! My very soul is wedded to it and if I were a bird I would fly about the earth seeking the successive autumns.