Carl Sagan Quotes

Carl Edward Sagan (/?se???n/; November 9, 1934 – December 20, 1996) was an American astronomer, cosmologist, astrophysicist, astrobiologist, author, science popularizer, and science communicator in astronomy and other natural sciences. He is best known for his work as a science popularizer and 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 now accepted hypothesis that the high surface temperatures of Venus can be attributed to and calculated using the greenhouse effect.

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Carl Sagan


Somewhere, something incredible is waiting to be known.

Carl Sagan

#Incredible #Waiting


For small creatures such as we the vastness is bearable only through love.

Carl Sagan

#Small #Vastness


We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology.

Carl Sagan

#Anyone #Dependent #Hardly #Science #Society #Technology #Thrive


If you wish to make an apple pie from scratch, you must first invent the universe.

Carl Sagan

#Apple #Nature #Universe #Wish


Science is a way of thinking much more than it is a body of knowledge.

Carl Sagan

#Body #Knowledge #Science #Thinking


We've arranged a civilization in which most crucial elements profoundly depend on science and technology.

Carl Sagan

#Arranged #Civilization #Depend #Science #Technology #Understands


In the vastness of space and the immensity of time, it is my joy to share a planet and an epoch with Annie.[Dedication to Sagan's wife, Ann Druyan, in Cosmos]

Carl Sagan

#Dedication #Epoch #Immensity #Sagan #Share #Vastness


Imagination will often carry us to worlds that never were. But without it we go nowhere.

Carl Sagan

#Art #Imagination #Life #Motivation #Often


The nuclear arms race is like two sworn enemies standing waist deep in gasoline, one with three matches, the other with five.

Carl Sagan

#Enemies #Race #Sagan


If artificial selection can make such major changes in so short a period of time, what must natural selection, working over billions of years, be capable of? The answer is all the beauty and diversity of the biological world. Evolution is a fact, not a theory. That the mechanism of evolution

Carl Sagan


The symbolism seemed so apt. The same technology that can propel apocalyptic weapons from continent to continent would enable the first human voyage to another planet. It was a choice of fitting mythic power: to embrace the planet named after, rather than the madness ascribed to, the god of war.

Carl Sagan


The Yale anthropologist Weston La Barre goes far as to argue that `a surprisingly good case could be made that much of culture is hallucination` and that `the whole intent and function of ritual appears to be... a group wish to hallucinate reality`.

Carl Sagan

#Anthropologist #Hallucination #Intent #Yale


There are many hypotheses in science that are wrong. That's perfectly alright; it's the aperture to finding out what's right. Science is a self-correcting process. To be accepted, new ideas must survive the most rigorous standards of evidence and scrutiny."

Carl Sagan

#Alright #Rigorous #Scrutiny


Likewise, if we offer too much silent assent about mysticism and superstition - even when it seems to be doing a little good - we abet a general climate in which scepticism is considered impolite, science tiresome, and rigorous thinking somehow stuffy and inappropriate."

Carl Sagan

#Assent #Inappropriate #Likewise #Rigorous #Scepticism #Superstition


We humans, as species, are interested in communication with extraterrestrial intelligence. Would not a good beginning be improved communication with terrestral intelligence, with other human beings of different cultures and languages, with the great apes, with the dolphines, but particularly with those intelligent masters of the deep, the great whales?"

Carl Sagan