The place to observe nature is where you are.

The fuel in the earth will be exhausted in a thousand or more years, and its mineral wealth, but man will find substitutes for these in the winds, the waves, the sun's heat, and so forth.

....success in walking is not to let your right foot know what your left foot doeth. Your heart must furnish such music that in keeping time to it your feet will carry you around the globe without knowing it.

How beautiful the leaves grow old. How full of light and color are their last days.

Man is, and always has been, a maker of gods. It has been the most serious and significant occupation of his sojourn in the world.

I am in love with this world . . . I have climbed its mountains, roamed its forests, sailed its waters, crossed its deserts, felt the sting of its frosts, the oppression of its heats, the drench of its rains, the fury of its winds, and always have beauty and joy waited upon my goings and comings.

Some men are like nails, very easily drawn; others however are more like rivets never drawn at all.