Carl Sagan Quotes, War Quotes, Nuclear Quotes

Except for fools and madmen, everyone knows that nuclear war would he an unprecedented human catastrophe.

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If we ruin the earth, there is no place else to go

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We humans look rather different from a tree. Without a doubt we perceive the world differently than a tree does. But down deep, at the molecular heart of life, the trees and we are essentially identical.

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Tags : Carl Sagan Quotes , Heart Quotes , Tree Quotes

It will not be we who reach Alpha Centauri, and the other nearby stars. It will be a species very like us - but with more of our strengths and fewer of our weaknesses.

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Tags : Carl Sagan Quotes , Stars Quotes , Weakness Quotes

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.

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Don't judge everyone else by your own limited experience.

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The impediment to scientific thinking is not, I think, the difficulty of the subject. Complex intellectual feats have been mainstays even of oppressed cultures. Shamans, magicians and theologians are highly skilled in their intricate and arcane arts. No, the impediment is political and hierarchical.

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Books tap the wisdom of our species -- the greatest minds, the best teachers -- from all over the world and from all our history. And they're patient.

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But nature is always more subtle, more intricate, more elegant than what we are able to imagine.

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Tags : Carl Sagan Quotes , Able Quotes , Imagine Quotes

Science arouses a soaring sense of wonder. But so does pseudoscience. Sparse and poor popularizations of science abandon ecological niches that pseudoscience promptly fills. If it were widely understood that claims to knowledge require adequate evidence before they can be accepted, there would be no room for pseudoscience.

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Tags : Carl Sagan Quotes , Doe Quotes , Pseudoscience Quotes

We go about our daily lives understanding almost nothing of the world.

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Tags : Carl Sagan Quotes , Understanding Quotes , World Quotes

I promise to question everything my leaders tell me. I promise to use my critical faculties. I promise to develop my independence of thought. I promise to educate myself so I can make my own judgments.

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Extraordinary claim requires extraordinary proof.

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In more than one respect, the exploring of the Solar System and homesteading other worlds constitutes the beginning, much more than the end, of history.

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Tags : Carl Sagan Quotes , Other Worlds Quotes , Ends Quotes

Where did God come from? If we decide this is an unanswerable question why not save a step and conclude that the origin of the universe is an unanswerable question.

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Tags : Carl Sagan Quotes , Religion Quotes , Why Not Quotes

Any sufficiently crisp question can be answered by a single binary digit-0 or 1, yes or no.

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The very act of understanding is a celebration of joining, merging, even if on a very modest scale, with the magnificence of the Cosmos.

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Every time you look up at the sky, every one of those points of light is a reminder that fusion power is extractable from hydrogen and other light elements, and it is an everyday reality throughout the Milky Way Galaxy.

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The brain is like a muscle. When it is in use we feel very good. Understanding is joyous.

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Tags : Carl Sagan Quotes , Wisdom Quotes , Understanding Quotes

If some good evidence for life after death were announced, I'd be eager to examine it; but it would have to be real scientific data, not mere anecdote. As with the face on Mars and alien abductions, better the hard truth, I say, than the comforting fantasy.

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Tags : Carl Sagan Quotes , Atheist Quotes , Real Quotes