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Carl Edward Sagan Quotes (35 Quotes)


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  • Science is not only compatible with spirituality it is a profound source of spirituality.
    (Carl Edward Sagan)

  • You have to know the past to understand the present.
    (Carl Edward Sagan)

  • The wind whips through the canyons of the American Southwest, and there is no one to hear it but us - a reminder of the 40,000 generations of thinking men and women who preceded us, about whom we know almost nothing, upon whom our civilization is based.
    (Carl Edward Sagan)

  • For most of human history we have searched for our place in the cosmos. Who are we What are we We find that we inhabit an insignificant planet of a hum-drum star lost in a galaxy tucked away in some forgotten corner of a universe in which there are
    (Carl Edward Sagan)

  • My deeply held belief is that if a god of anything like the traditional sort exists, our curiosity and intelligence is provided by such a God. We would be unappreciative of that gift ... if we suppressed our passion to explore the universe and ourselves.
    (Carl Edward Sagan)


  • A central lesson of science is that to understand complex issues (or even simple ones), we must try to free our minds of dogma and to guarantee the freedom to publish, to contradict, and to experiment. Arguments from authority are unacceptable.
    (Carl Edward Sagan)

  • In order to make an apple pie from scratch, you must first create the universe.
    (Carl Edward Sagan)

  • I maintain there is much more wonder in science than in pseudoscience. And in addition, to whatever measure this term has any meaning, science has the additional virtue, and it is not an inconsiderable one, of being true.
    (Carl Edward Sagan)

  • I worry that, especially as the Millennium edges nearer, pseudo-science and superstition will seem year by year more tempting, the siren song of unreason more sonorous and attractive.
    (Carl Edward Sagan)

  • The fact that someone says something, doesn't mean it's true. Doesn't mean they're lying, but it doesn't mean it's true.
    (Carl Edward Sagan)

  • I also wish that the Pledge of Allegiance were directed at the Constitution and the Bill of Rights, as it is when the President takes his oath of office, rather than to the flag and the nation
    (Carl Edward Sagan)

  • That's here. That's home. That's us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives. The aggregate of our joy and suffering, thousands of confident religions, ideologies, and economic doctrines, every hunter and forager, every hero and coward, every creator and destroyer of civilization, every king and peasant, every young couple in love, every mother and father, hopeful child, inventor and explorer, every teacher of morals, every corrupt politician, every 'superstar,' every 'supreme leader,' every saint and sinner in the history of our species lived there - on a mote of dust suspended in a sunbeam.
    (Carl Edward Sagan)

  • In science it often happens that scientists say, 'You know that's a really good argument my position is mistaken', and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen.
    (Carl Edward Sagan)

  • Knowing a great deal is not the same as being smart intelligence is not information alone but also judgment, the manner in which information is collected and used
    (Carl Edward Sagan)

  • 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 Edward Sagan)


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