The sea, the great unifier, is man's only hope. Now, as never before, the old phrase has a literal meaning: we are all in the same boat.
Earth provides enough to satisfy every man's needs, but not every man's greed.
To waste, to destroy our natural resources, to skin and exhaust the land instead of using it so as to increase its usefulness, will result in undermining in the days of our children the very prosperity which we ought by right to hand down to them amplified and developed.
The conservation of our natural resources and their proper use constitute the fundamental problem which underlies almost every other problem of our national life.
For in the true nature of things, if we rightly consider, every green tree is far more glorious than if it were made of gold and silver.
People are not going to care about animal conservation unless they think that animals are worthwhile.
...conservation of land and conservation of people frequently go hand in hand.
Energy conservation is the foundation of energy independence.
What we are doing to the forests of the world is but a mirror reflection of what we are doing to ourselves and to one another.
We abuse land because we regard it as a commodity belonging to us. When we see land as a community to which we belong, we may begin to use it with love and respect.
Man is a complex being: he makes deserts bloom - and lakes die.
We know that when we protect our oceans we're protecting our future.
I think the environment should be put in the category of our national security. Defense of our resources is just as important as defense abroad. Otherwise what is there to defend?
In wildness is the preservation of the world.
We never know the worth of water till the well is dry.
We do not inherit the earth from our ancestors; we borrow it from our children
Man's heart away from nature becomes hard.
What is the use of a house if you haven't got a tolerable planet to put it on?
The activist is not the man who says the river is dirty. The activist is the man who cleans up the river.
The more clearly we can focus our attention on the wonders and realities of the universe about us, the less taste we shall have for destruction.
The earth we abuse and the living things we kill will, in the end, take their revenge; for in exploiting their presence we are diminishing our future.
It is a curious situation that the sea, from which life first arose, should now be threatened by the activities of one form of that life. But the sea, though changed in a sinister way, will continue to exist: the threat is rather to life itself.
Conservation and rural-life policies are really two sides of the same policy; and down at the bottom this policy rests upon the fundamental law that neither man nor nation can prosper unless, in dealing with the present, thought is steadily given for the future.
We could have saved the Earth but we were too damned cheap.
The universe is not required to be in perfect harmony with human ambition.
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