Conservation is not merely a thing to be enshrined in outdoor museums, but a way of living on land.

The oldest voice in the world is the wind.

The earth is our existence, and our body is attached to the earth.

Oil! Our secret god, our secret sharer, our magic wand, fulfiller of our every desire, our coconspirator, the sine qua non in all we do!

Men have an extraordinarily erroneous opinion of their position in nature; and the error is ineradicable.

Nature never jests.

Before the earth could become an industrial garbage can, it had first to become a research laboratory.

The sea is mother-death, and she is a mighty female, the one who wins, the one who sucks us all up.

It seems to me that we all look at nature too much and live with her too little.

It raineth every day, and the weather represents our tearful despair on a large scale.

Man’s great mission is not to conquer nature by main force but to cooperate with her intelligently but lovingly for his own purposes.

There is something stirring in the way civilization gapes like a savage at the achievements of nature.

Nature is often hidden, sometimes overcome, seldom extinguished.