Carl Sagan Quotes

We are the custodians of life's meaning.

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Science ... looks skeptically at all claims to knowledge, old and new. It teaches not blind obedience to those in authority but to vigorous debate, and in many respects that's the secret of its success.

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Some 5 billion years from now, there will be a last perfect day on Earth... then the sun will begin to die, life will be extinguished, the oceans will boil and evaporate away.

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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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We are at a crossroads in human history. Never before has there been a moment so simultaneously perilous and promising. We are the first species to have taken evolution into our own hands.

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The prediction of nuclear winter is drawn not, of course, from any direct experience with the consequences of global nuclear war, but rather from an investigation of the governing physics.

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The sky calls to us. If we do not destroy ourselves, we will one day venture to the stars.

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If our long-term survival is at stake, we have a basic responsibility to our species to venture to other worlds. Sailors on a becalmed sea, we sense the stirring of a breeze.

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We are, in a way, temporary ambulatory repositories for our nucleic acids. This does not deny our humanity; it does not prevent us from pursuing the good, the true and the beautiful. But it would be a great mistake to ignore where we have come from in our attempt to determine where we are going.

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We need to reduce military budgets; raise living standards; engender respect for learning; support science, scholarship, invention, and industry; promote free inquiry; reduce domestic coercion; involve the workers more in managerial decisions; and promote genuine respect and understanding derived from an acknowledgement of our common humanity and our common jeopardy.

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Books are key to understanding the world and participating in a democratic society.

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We are the first species to have taken our evolution into our own hands.

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Better by far to embrace the hard truth than a reassuring fable. If we crave some cosmic purpose, then let us find ourselves a worthy goal.

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The cosmos is within us. We are made of star stuff

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We on Earth have just awakened to the great oceans of space and time from which we have emerged.

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It goes with a courageous intent to greet the universe as it really is, not to foist our emotional predispositions on it but to courageously accept what our explorations tell us.

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Preserve and cherish the pale blue dot, the only home we've ever known.

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For small creatures such as we the vastness is bearable only through love.

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The old appeals to racial, sexual and religious chauvinism to rabid nationalist fervor, are beginning not to work.

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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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