Carl Sagan citations
Date de naissance: 9. novembre 1934
Date de décès: 20. décembre 1996
Autres noms:Karl Seýgan
Carl Edward Sagan , né le 9 novembre 1934 à Brooklyn, New York et mort le 20 décembre 1996 à Seattle, Washington, est un scientifique et astronome américain. Il est l'un des fondateurs de l'exobiologie. Il a mis en place le programme SETI de recherche d'intelligence extraterrestre et réalisé pour la télévision la série de vulgarisation scientifique Cosmos, diffusée sur plusieurs continents. Il est aussi connu pour son scepticisme.
Citations Carl Sagan
„Dans la pseudoscience, les hypothèses sont souvent formulées de telle manière qu'elles soient invulnérables à toute expérience qui puisse les réfuter; comme cela même en principe c'est impossible de les invalider. Ceux qui la pratiquent sont toujours sur la défensive et méfiants. Ils s'opposent à l'examen sceptique; et quand l'hypothèse pseudoscientifique ne réussit pas à convaincre les scientifiques, ils déduisent qu'il y a des conspirations pour la supprimer.“
— Carl Sagan, Billions & Billions: Thoughts on Life and Death at the Brink of the Millennium
— Carl Sagan
Context: The amount of organic matter that could have been produced in the first few hundred million years of Earth history was sufficient to have produced in the present ocean a several-percent solution of organic matter. This is just about the dilution of Knorr's chicken soup, and not that different from the composition either. And chicken soup is widely known to be good for life.
„Look again at that dot. 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.
The Earth is a very small stage in a vast cosmic arena. Think of the endless cruelties visited by the inhabitants of one corner of this pixel on the scarcely distinguishable inhabitants of some other corner, how frequent their misunderstandings, how eager they are to kill one another, how fervent their hatreds. Think of the rivers of blood spilled by all those generals and emperors so that, in glory and triumph, they could become the momentary masters of a fraction of a dot.
Our posturings, our imagined self-importance, the delusion that we have some privileged position in the Universe, are challenged by this point of pale light. Our planet is a lonely speck in the great enveloping cosmic dark. In our obscurity, in all this vastness, there is no hint that help will come from elsewhere to save us from ourselves.
The Earth is the only world known so far to harbor life. There is nowhere else, at least in the near future, to which our species could migrate. Visit, yes. Settle, not yet. Like it or not, for the moment the Earth is where we make our stand.
It has been said that astronomy is a humbling and character-building experience. There is perhaps no better demonstration of the folly of human conceits than this distant image of our tiny world. To me, it underscores our responsibility to deal more kindly with one another, and to preserve and cherish the pale blue dot, the only home we've ever known.“
— Carl Sagan, Pale Blue Dot: A Vision of the Human Future in Space
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— Carl Sagan, Contact
This is a paraphrase of Sagan quoting Thomas Carlyle: "A sad spectacle. If they be inhabited, what a scope for misery and folly. If they be not inhabited, what a waste of space." Sagan delivered this quote during the symposium on "Life Beyond Earth and the Mind of Man", held at Boston University (20 November 1972), published in Life Beyond Earth and the Mind of Man (1973) edited by Richard Berendzen; Life Beyond Earth and the Mind of Man (1975) National Archives video http://www.youtube.com/watch?v=cQeOp7a8QMI
„For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring.“
— Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark
Ch. 1 : The Most Precious Thing, p. 12
„We began as wanderers, and we are wanderers still. We have lingered long enough on the shores of the cosmic ocean. We are ready at last to set sail for the stars.“
— Carl Sagan, Cosmos
Context: We embarked on our journey to the stars with a question first framed in the childhood of our species and in each generation asked anew with undiminished wonder: What are the stars? Exploration is in our nature. We began as wanderers, and we are wanderers still. We have lingered long enough on the shores of the cosmic ocean. We are ready at last to set sail for the stars. p. 193