We owe our lives to the sun... How is it, then, that we feel no gratitude?
What is a weed? A plant whose virtues have never been discovered.
A human being is a part of the whole called by us universe; a part limited in time and space. He experiences himself, his thoughts, and his feelings as something separate from the rest - a kind of optical delusion of consciousness.
Economic advance is not the same thing as human progress.
The Truly Healthy environment is not merely safe but stimulating.
It is imperative to maintain portions of the wilderness untouched so that a tree will rot where it falls, a waterfall will pour its curve without generating electricity, a trumpeter swan may float on uncontaminated water - and moderns may at least see what their ancestors knew in their nerves and blood.
The struggle to save the global environment is in one way much more difficult than the struggle to vanquish Hitler, for this time the war is with ourselves. We are the enemy, just as we have only ourselves as allies.
Our children may save us if they are taught to care properly for the planet; but if not, it may be back to the Ice Age or the caves from where we first emerged. Then we'll have to view the universe above from a cold, dark place. No more jet skis, nuclear weapons, plastic crap, broken pay phones, drugs, cars, waffle irons, or television. Come to think of it, that might not be a bad idea.
If the sight of the blue skies fills you with joy, if a blade of grass springing up in the fields has power to move you, if the simple things of nature have a message that you understand, rejoice, for your soul is alive.
How long can men thrive between walls of brick, walking on asphalt pavements, breathing the fumes of coal and of oil, growing, working, dying, with hardly a thought of wind, and sky, and fields of grain, seeing only machine-made beauty, the mineral-like quality of life?
Adopt the pace of nature: her secret is patience.
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.
The ultimate test of a moral society is the kind of world that it leaves to its children.
I go to nature to be soothed and healed, and to have my senses put in order.
Never doubt that a small group of thoughtful, committed citizens can change the world; indeed, it's the only thing that ever has.
Climb the mountains and get their good tidings.
We cannot command Nature except by obeying her.
There are no passengers on spaceship earth. We are all crew.
We shall require a substantially new manner of thinking if mankind is to survive.
In wilderness I sense the miracle of life, and behind it our scientific accomplishments fade to trivia.
An understanding of the natural world and what's in it is a source of not only a great curiosity but great fulfillment...
The wilderness and the idea of wilderness is one of the permanent homes of the human spirit.
I love not man the less, but Nature more.
There is pleasure in the pathless woods, there is rapture in the lonely shore, there is society where none intrudes, by the deep sea, and music in its roar; I love not Man the less, but Nature more.
Growth for the sake of growth is the ideology of the cancer cell.
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