Thomas Jefferson taught that a democracy was impractical unless the people were educated. - Carl Sagan

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Thomas Jefferson taught that a democracy was impractical unless the people were educated.

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About Carl Sagan

Carl Edward Sagan (9 November 1934 – 20 December 1996) was an American astronomer, planetary scientist, cosmologist, astrophysicist, astrobiologist, author, and science communicator. His best known scientific contribution is research on extraterrestrial life, including experimental demonstration of the production of amino acids from basic chemicals by radiation. Sagan assembled the first physical messages sent into space, the Pioneer plaque and the Voyager Golden Record, universal messages that could potentially be understood by any extraterrestrial intelligence that might find them. Sagan argued the hypothesis, accepted since, that the high surface temperatures of Venus can be attributed to, and calculated using, the greenhouse effect. He testified to the US Congress in 1985 that the greenhouse effect will change the earth's climate system.

Biography information from Wikiquote

Also Known As

Native Name: Carl Edward Sagan
Alternative Names: Sagan Carl E. Sagan Carl E Sagan C. E. Sagan C.E. Sagan C E Sagan C. Sagan C Sagan Sagan C Sagan C. Sagan C. E. Sagan CE
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Additional quotes by Carl Sagan

We, the nuclear hostages - all the peoples of the Earth - must educate ourselves about conventional and nuclear warfare. Then we must educate our governments. We must learn the science and technology that provide the only conceivable tools for our survival. We must be willing to challenge courageously the conventional social, political, economic and religious wisdom. We must make every effort to understand that our fellow humans, all over the world, are human. Of course, such steps are difficult. Bus as Einstein many times replied when his suggestions were rejected as impractical or as inconsistent with ‘human nature’: What is the alternative?

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