Carl Sagan Quotes, Cosmos Quotes, Stills Quotes

We began as wanderers, and we are wanderers still.

5 years ago

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That we can now think of no mechanism for astrology is relevant but unconvincing. No mechanism was known, for example, for continental drift when it was proposed by Wegener. Nevertheless, we see that Wegener was right, and those who objected on the grounds of unavailable mechanism were wrong.

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

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[One's] inability to invalidate your hypothesis is not at all the same thing as proving it true.

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When permitted to listen to alternative opinions and engage in substantive debate, people have been known to change their minds. It can happen.

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Recent research shows that many children without enough to eat wind up with diminished capacity to understand and learn (“cognitive impairment” ). Children don't have to be starving for this to happen. Even mild undernourishment — the kind most common among poor people in America — can do it.

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This oak tree and me, we're made of the same stuff.

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Nobody listens to mathematicians.

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All civilizations become either spacefaring or extinct.

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I don't know the answer. Maybe no one knows. Maybe when you grow up, you'll be the first to find out.

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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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Tags : Carl Sagan Quotes , Animal Quotes , Men Quotes

There are many instances in science, where those closest to the intricacies of the subject have a more highly developed sense of its intractability than those at some remove. On the other hand, those at too great a distance may, I am well aware, mistake ignorance for perspective.

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As the ancient myth makers knew, we are children equally of the earth and the sky.

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The suppression of uncomfortable ideas may be common in religion or in politics, but it is not the path to knowledge; it has no in the endeavor of science. We do not know in advance who will discover fundamental insights.

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Tags : Carl Sagan Quotes , Knowledge Quotes , Science Quotes

We are the only species on the planet, so far as we know, to have invented a communal memory stored neither in our genes nor in our brains. The warehouse of this memory is called the library

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The fact that so little of the findings of modern science is prefigured in Scripture to my mind casts further doubt on it divine inspiration.

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Modern science has been a voyage into the unknown, with a lesson in humility waiting at every stop. Many passengers would rather have stayed home.

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Some racists still reject the plain testimony written in the DNA that all the races are not only human but nearly indistinguishable. . . .

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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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'In his celebrated book, 'On Liberty', the English philosopher John Stuart Mill argued that silencing an opinion is "a peculiar evil." If the opinion is right, we are robbed of the "opportunity of exchanging error for truth"; and if it's wrong, we are deprived of a deeper understanding of the truth in its "collision with error." If we know only our own side of the argument, we hardly know even that: it becomes stale, soon learned by rote, untested, a pallid and lifeless truth.'

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