Because we all share this planet earth, we have to learn to live in harmony and peace with each other and with nature. This is not just a dream, but a necessity.
It suddenly struck me that that tiny pea, pretty and blue, was the Earth. I put up my thumb and shut one eye, and my thumb blotted out the planet Earth. I didn't feel like a giant. I felt very, very small.
For instance, on the planet Earth, man had always assumed that he was more intelligent than dolphins because he had achieved so much—the wheel, New York, wars and so on—whilst all the dolphins had ever done was muck about in the water having a good time. But conversely, the dolphins had always believed that they were far more intelligent than man—for precisely the same reasons.
How inappropriate to call this planet Earth when it is quite clearly Ocean.
The earth is what we all have in common.
Our population and our use of the finite resources of planet Earth are growing exponentially, along with our technical ability to change the environment for good or ill. But our genetic code still carries the selfish and aggressive instincts that were of survival advantage in the past. It will be difficult enough to avoid disaster in the next hundred years, let alone the next thousand or million. Our only chance of long term survival, is not to remain inward looking on planet Earth, but to spread out into space.
We don’t own the planet Earth, we belong to it. And we must share it with our wildlife.
We can pay the ecological debt by changing economic models, and by giving up luxury consumption, setting aside selfishness and individualism, and thinking about the people and the planet Earth.
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.
The ultimate test of a man's conscience may be his willingness to sacrifice something today for future generations whose words of thanks will not be heard.
Who will speak for Planet Earth?
Earth provides enough to satisfy every man's needs, but not every man's greed.
Here men from the planet Earth first set foot upon the Moon. July 1969 AD. We came in peace for all mankind.
Our planet is a lonely speck in the great enveloping cosmic dark. In our obscurity, in all this vastness, there is no hint that help will come from elsewhere to save us from ourselves.
Sooner or later, we will have to recognise that the Earth has rights, too, to live without pollution. What mankind must know is that human beings cannot live without Mother Earth, but the planet can live without humans.
I put up my thumb and it blotted out the planet Earth.
There are no boundaries in the real Planet Earth. No United States, no Soviet Union, no China, no Taiwan...Rivers flow unimpeded across the swaths of continents. The persistent tides - the pulse of the sea - do not discriminate; they push against all the varied shores on Earth.
I still think we are smart enough to not destroy planet Earth, our only home.
The proper use of science is not to conquer nature but to live in it.
I only went out for a walk and finally concluded to stay out till sundown, for going out, I found, was really going in.
Our only chance of long-term survival is not to remain lurking on planet Earth, but to spread out into space.
A friend of mine once sent me a post card with a picture of the entire planet Earth taken from space. On the back it said, 'Wish you were here.
Our system - of debt-fueled economic growth, of ineffective democracy, of overloading planet Earth - is eating itself alive.
What is the use of a house if you haven't got a tolerable planet to put it on?
There's so much pollution in the air now that if it weren't for our lungs there'd be no place to put it all.
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