Never doubt that a small group of thoughtful, committed citizens can change the world indeed, it's the only thing that ever has.
Keep close to Nature's heart... and break clear away, once in awhile, and climb a mountain or spend a week in the woods. Wash your spirit clean.
Thank God men cannot fly, and lay waste the sky as well as the earth.
God has cared for these trees, saved them from drought, disease, avalanches, and a thousand tempests and floods. But he cannot save them from fools.
When we try to pick out anything by itself, we find it hitched to everything else in the universe.
It is horrifying that we have to fight our own government to save the environment.
If people destroy something replaceable made by mankind, they are called vandals if they destroy something irreplaceable made by God, they are called developers.
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?
I did not become a vegetarian for my health, I did it for the health of the chickens.
Take a course in good water and air and in the eternal youth of Nature you may renew your own. Go quietly, alone no harm will befall you.
They claim this mother of ours, the Earth, for their own use, and fence their neighbors away from her, and deface her with their buildings and their refuse.
Birds are indicators of the environment. If they are in trouble, we know we'll soon be in trouble.
If we do not permit the earth to produce beauty and joy, it will in the end not produce food, either.
After all, sustainability means running the global environment - Earth Inc. - like a corporation: with depreciation, amortization and maintenance accounts. In other words, keeping the asset whole, rather than undermining your natural capital.
You will die but the carbon will not its career does not end with you. It will return to the soil, and there a plant may take it up again in time, sending it once more on a cycle of plant and animal life.
In a few decades, the relationship between the environment, resources and conflict may seem almost as obvious as the connection we see today between human rights, democracy and peace.
If we gave up eating beef we would have roughly 20 to 30 times more land for food than we have now.
I see humanity now as one vast plant, needing for its highest fulfillment only love, the natural blessings of the great outdoors, and intelligent crossing and selection.
People blame their environment. There is only one person to blame - and only one - themselves.
Why are ecologists and environmentalists so feared and hated? This is because in part what they have to say is new to the general public, and the new is always alarming.
I don't think we're going to save anything if we go around talking about saving plants and animals only we've got to translate that into what's in it for us.
I think the cost of energy will come down when we make this transition to renewable energy.
When a man wantonly destroys one of the works of man we call him a vandal. When he destroys one of the works of god we call him a sportsman.
Every time I have some moment on a seashore, or in the mountains, or sometimes in a quiet forest, I think this is why the environment has to be preserved.
Environmental degradation, overpopulation, refugees, narcotics, terrorism, world crime movements, and organized crime are worldwide problems that don't stop at a nation's borders.
Journey with me to a true commitment to our environment. Journey with me to the serenity of leaving to our children a planet in equilibrium.
In a finite world this means that the per capita share of the world's goods must steadily decrease.
Harmony with land is like harmony with a friend you cannot cherish his right hand and chop off his left.
The only way forward, if we are going to improve the quality of the environment, is to get everybody involved.
When we realize we can make a buck cleaning up the environment, it will be done!
Not all is doom and gloom. We are beginning to understand the natural world and are gaining a reverence for life - all life.
I think the government has to reposition environment on top of their national and international priorities.
Our world faces a true planetary emergency. I know the phrase sounds shrill, and I know it's a challenge to the moral imagination.
Environmental concern is now firmly embedded in public life: in education, medicine and law in journalism, literature and art.
There is no place where we can safely store worn-out reactors or their garbage. No place!
It seems that every time mankind is given a lot of energy, we go out and wreck something with it.
It is absolutely imperative that we protect, preserve and pass on this genetic heritage for man and every other living thing in as good a condition as we received it.
We assume that everything's becoming more efficient, and in an immediate sense that's true our lives are better in many ways. But that improvement has been gained through a massively inefficient use of natural resources.
Population, when unchecked, goes on doubling itself every 25 years or increases in a geometrical ratio.