Carl Sagan Quotes, Winter Quotes, Science Quotes

If the greenhouse effect is a blanket in which we wrap ourselves to keep warm, nuclear winter kicks the blanket off.

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We are the custodians of life's meaning.

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Accommodation to change, the thoughtful pursuit of alternative futures are keys to the survival of civilization and perhaps of the human species.

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One of the greatest gifts adults can give - to their offspring and to their society - is to read to children.

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For me, the most ironic token of [the first human moon landing] is the plaque signed by President Richard M. Nixon that Apollo 11 took to the moon. It reads, ‘We came in peace for all Mankind.’ As the United States was dropping seven and a half megatons of conventional explosives on small nations in Southeast Asia, we congratulated ourselves on our humanity. We would harm no one on a lifeless rock.

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Tags : Carl Sagan Quotes , Moon Quotes , Rocks Quotes

What is called for is an exquisite balance between two conflicting needs: the most skeptical scrutiny of all hypotheses that are served up to us and at the same time a great openness to new ideas. If you are only skeptical, then no new ideas make it through to you. On the other hand, if you are open to the point of gullibility and have not an ounce of skeptical sense in you, then you cannot distinguish useful ideas from the worthless ones.

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Tags : Carl Sagan Quotes , Hands Quotes , Ideas Quotes

It is of interest to note that while some dolphins are reported to have learned English - up to fifty words used in correct context - no human being has been reported to have learned dolphinese.

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Tags : Carl Sagan Quotes , Motivational Quotes , Learning Quotes

Our loyalties are to the species and the planet. We speak for Earth.

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Imagine a room awash in gasoline, and there are two implacable enemies in that room. One of them has nine thousand matches. The other has seven thousand matches. Each of them is concerned about who's ahead, who's stronger. Well that's the kind of situation we are actually in. The amount of weapons that are available to the United States and the Soviet Union are so bloated, so grossly in excess of what's needed to dissuade the other, that if it weren't so tragic, it would be laughable. What is necessary is to reduce the matches and to clean up the gasoline.

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Tags : Carl Sagan Quotes , Science Quotes , Two Quotes

I think the health of our civilization, the depth of our awareness about the underpinnings of our culture, and our concern for the future, can all be tested by how well we support our libraries.

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Tags : Carl Sagan Quotes , Thinking Quotes , Civilization Quotes

A book is made from a tree. It is an assemblage of flat, flexible parts (still called "leaves") imprinted with dark pigmented squiggles. One glance at it and you hear the voice of another person, perhaps someone dead for thousands of years. Across the millennia, the author is speaking, clearly and silently, inside your head, directly to you. Writing is perhaps the greatest of human inventions, binding together people, citizens of distant epochs, who never knew one another. Books break the shackles of time ― proof that humans can work magic.

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Tags : Carl Sagan Quotes , Inspirational Quotes , Funny Quotes

Extraordinary claims demand extraordinary evidence

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Any faith that admires truth, that strives to know God, must be brave enough to accommodate the universe.

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The visions we offer our children shape the future.

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If the constellations had been named in the twentieth century, I suppose we would see bicycles and refrigerators in the sky.

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When you look more generally at life on Earth, you find that it is all the same kind of life. There are not many different kinds; there's only one kind. It uses about fifty fundamental biological building blocks, organic molecules.

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Tags : Carl Sagan Quotes , Block Quotes , Molecules Quotes

Clutching our crystals and religiously consulting our horoscopes, our critical faculties in steep decline, unable to distinguish between what's true and what feels good, we slide, almost without noticing, into superstition and darkness.

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Tags : Carl Sagan Quotes , Feel Good Quotes , Darkness Quotes

You're capable of such beautiful dreams and such horrible nightmares.

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Tags : Carl Sagan Quotes , Beautiful Quotes , Dream Quotes

Exploration is in our nature. We began as wanderers, and we are wanderers still. We have lingered long enough on the shores of the cosmic ocean. We are ready at last to set sail for the stars.

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Tags : Carl Sagan Quotes , Stars Quotes , Ocean Quotes

We are...capable of using our compassion and our intelligence, our technology and our wealth, to make an abundant and meaningful life for every inhabitant of this planet. To enhance enormously our understanding of the Universe, and to carry us to the stars.

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Tags : Carl Sagan Quotes , Meaningful Quotes , Stars Quotes