Carl Sagan Quotes, Science Quotes, Usual Quotes

The usual rejoinder to someone who says 'They laughed at Columbus, they laughed at Galileo' is to say 'But they also laughed at Bozo the Clown'.

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Tags : Carl Sagan Quotes , Science Quotes , Usual Quotes

The candle flame gutters. Its little pool of light trembles. Darkness gathers. The demons begin to stir.

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I can find in my undergraduate classes, bright students who do not know that the stars rise and set at night, or even that the Sun is a star.

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

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Stars are phoenixes, rising from their own ashes.

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A googolplex is precisely as far from infinity as is the number 1... no matter what number you have in mind, infinity is larger still.

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Tags : Carl Sagan Quotes , Numbers Quotes , Mind Quotes

Philosophers and scientists confidently offer up traits said to be uniquely human, and the monkeys and apes casually knock them down -- toppling the pretension that humans constitute some sort of biological aristocracy among the beings on Earth.

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Tags : Carl Sagan Quotes , Aristocracy Quotes , Earth Quotes

Man is the matter of the cosmos, contemplating itself.

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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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We are all made up of star stuff.

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If we are merely matter intricately assembled, is this really demeaning? If there's nothing here but atoms, does that make us less or does that make matter more?

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Tags : Carl Sagan Quotes , Doe Quotes , Atoms Quotes

We have heard the rationales offered by the nuclear superpowers. We know who speaks for the nations. But who speaks for the human species? Who speaks for Earth?

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Tags : Carl Sagan Quotes , Nuclear Quotes , Earth Quotes

What a marvelous cooperative arrangement - plants and animals each inhaling each other's exhalations, a kind of planet-wide mutual mouth-to-stoma resuscitation, the entire elegant cycle powered by a star 150 million kilometers away.

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Tags : Carl Sagan Quotes , Stars Quotes , Animal Quotes

He sought a way to preserve the past. John Hershel was one of the founders of a new form of time travel.... a means to capture light and memories. He actually coined a word for it... photography. When you think about it, photography is a form of time travel. This man is staring at us from across the centuries, a ghost preserved by light.

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Tags : Carl Sagan Quotes , Photography Quotes , Memories Quotes

We are the product of 4.5 billion years of fortuitous, slow biological evolution. There is no reason to think that the evolutionary process has stopped. Man is a transitional animal. He is not the climax of creation.

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We can always take but never give.

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All colours are arbitrary.

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Eratosthenes was the director of the great library of Alexandria, the Centre of science and learning in the ancient world. Aristotle had argued that humanity was divided into Greeks and everybody else, whom he called barbarians and that the Greeks should keep themselves racially pure. He thought it was fitting for the Greeks to enslave other peoples. But Erathosthenes criticized Aristotle for his blind chauvinism, he believed there was good and bad in every nation.

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We are the custodians of life's meaning.

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The fossil record implies trial and error, an inability to anticipate the future, features inconsistent with an efficient Great Designer (although not with a Designer of a more remote and indirect temperament)

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Tags : Carl Sagan Quotes , Errors Quotes , Inability Quotes