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"Another glorious feature of many modern science museums is a movie theater showing IMAX or OMNIMAX films. In some cases the screen is ten stories tall and wraps around you. The Smithsonian's National Air & Space Museu, the popular museum on Earth, has premiered in its Langley Theater some of the best of these films. 'To Fly' brings a catch to my throat even after five or six viewings. I've seen religious leaders of many denominations witness 'Blue Planet' and be converted on the spot to the need to protect the Earth's environment."
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"An environment of infinite economic expansion is unsustainable in a world of finite resources."

"Chicago happened slowly, like a migraine. First they were driving through countryside, then, imperceptibly, the occasional town became a low suburban sprawl, and the sprawl became the city."

"Environmental cleanliness begins with each individual desire to be clean."

"If a man walk in the woods for love of them half of each day, he is in danger of being regarded as a loafer; but if he spends his whole day as a speculator, shearing off those woods and making earth bald before her time, he is esteemed an industrious and enterprising citizen."

"The human will be the only mammal in history to fully understand that its own self inflicted extinction is well underway."

"Environmental radiation research is the rent I pay for living on this planet."

"The mountains of things we throw away are much greater than the things we use. In this, if no other way, we can see the wild an reckless exuberance of our production, and waste seems to be the index."

"I could do a lot of stuff's but the problem is not here it's the place where I am, the crowd which has surrounded and many other factors."

"Even if the climate change is not real, its funds are real."
Explore more quotes by Carl Sagan

"We are all flawed and creatures of our times. Is it fair to judge us by the unknown standards of the future?"

"[In] everyday life, it is very rare that we are confronted with new facts about events of long ago. Our memories are almost never challenged. They can, instead, be frozen in place, no matter how flawed they are, or become a work in continual artistic revision."

"You squeeze the eyedropper, and a drop of pond water drips out onto the microscope stage. You look at the projected image. The drop is full of life - strange beings swimming, crawling, tumbling; high dramas of pursuit and escape, triumph and tragedy. This is a world populated by beings far more exotic than in any science fiction movie..."

"Skeptical scrutiny is the means, in both science and religion, by which deep thoughts can be winnowed from deep nonsense."

"Personally, I would be delighted if there were a life after death, especially if it permitted me to continue to learn about this world and others, if it gave me a chance to discover how history turns out."

"I am often amazed at how much more capability and enthusiasm for science there is among elementary school youngsters than among college students."

"When you make the finding yourself - even if you're the last person on Earth to see the light - you'll never forget it."

"There are many hypotheses in science which are wrong. That's perfectly all right: it's the aperture to finding out what's right. Science is a self-correcting process."

"There are no forbidden questions in science, no matters to sensitive or delicate to be probed, no sacred truths. That openness to new ideas, combined with the most rigorous, skeptical scrutiny of all ideas, sifts the wheat from the chaff. It makes no difference how smart, august, or beloved you are. You must prove your case in the face of determined, expert criticism. Diversity and debate are valued. Opinions are encouraged to contend"substantively and in depth."
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