Quotes by Carl Sagan

Carl Sagan

Carl Sagan

American astronomer, cosmologist, astrophysicist and author

Alive from: 1934-1996

Category: Writers (Contemporary)

Quotes 106 till 120 of 141.

  • Carl Sagan
    Carl Sagan
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    The words question and quest are cognates. Only through inquiry can we discover truth.
    Source: Brocas Brain: Reflections on the Romance of Science (1979)
  • Carl Sagan
    Carl Sagan
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    There are many hypotheses in science which are wrong. That’s perfectly all right: it’s the aperture to finding out what’s right. Science is a self-correcting process.
  • Carl Sagan
    Carl Sagan
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    There is a lurking fear that some things are 'not meant' to be known, that some inquiries are too dangerous for human being to make.
  • Carl Sagan
    Carl Sagan
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    There is nothing inhuman about an intelligent machine; it is indeed an expression of those superb intellectual capabilities that only human beings, of all the creatures on our planet, now possess.
    Source: Future space programs 1975
  • Carl Edward Sagan
    Carl Edward Sagan
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    There is today-in a time when old beliefs are withering-a kind of philosophical hunger, a need to know who we are and how we got here. It is an on-going search, often unconscious, for a cosmic perspective for humanity.
  • Carl Sagan
    Carl Sagan
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    They (i. e., the Pythagoreans) did not advocate the free confrontation of conflicting points of view. Instead, like all orthodox religions, they practised a rigidity that prevented them from correcting their errors.
    Source: Cosmos (1980)
  • Carl Sagan
    Carl Sagan
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    This planet is run by crazy people. Remember what they have to do to get where they are. Their perspective is so narrow, so...brief. A few years. In the best of them a few decades. They care only about the time they are in power.
    Source: Contact (1985) Ch. 23 (p. 403)
  • Carl Sagan
    Carl Sagan
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    Those afraid of the universe as it really is, those who pretend to nonexistent knowledge and envision a Cosmos centered on human beings will prefer the fleeting comforts of superstition. They avoid rather than confront the world. But those with the courage to explore the weave and structure of the Cosmos, even where it differs profoundly from their wishes and prejudices, will penetrate its deepest mysteries.
    Source: Cosmos (1980)
  • Carl Sagan
    Carl Sagan
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    To read is to voyage through time.
  • Carl Sagan
    Carl Sagan
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    Understanding is a kind of ecstasy.
  • Carl Sagan
    Carl Sagan
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    We are made of star-stuff. Our bodies are made of star-stuff. There are pieces of star within us all.
  • Carl Sagan
    Carl Sagan
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    We are the local embodiment of a Cosmos grown to self-awareness. We have begun to contemplate our origins: starstuff pondering the stars; organized assemblages of ten billion billion billion atoms considering the evolution of atoms; tracing the long journey by which, here at least, consciousness arose. Our loyalties are to the species and the planet. We speak for Earth. Our obligation to survive is owed not just to ourselves but also to that Cosmos, ancient and vast, from which we spring.
  • Carl Sagan
    Carl Sagan
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    We are, in the most profound sense, children of the Cosmos.
  • Carl Sagan
    Carl Sagan
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    We could not guess how different from us they (extraterrestrials) might be. It was hard enough to guess the intentions of our elected representatives in Washington.
    Source: Contact (1985) Ch. 3 (p. 48)
  • Carl Sagan
    Carl Sagan
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    We have also arranged things so that almost no one understands science and technology. This is a prescription for disaster. We might get away with it for a while, but sooner or later this combustible mixture of ignorance and power is going to blow up in our faces.
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