Carl Sagan citations célèbres
“Des affirmations extraordinaires nécessitent des preuves extraordinaires.”
Extraordinary claims require extraordinary evidence.
en
Citation presque identique à Extraordinary claims require extraordinary proof. de Marcello Truzzi, co-fondateur du Committee for Skeptical Inquiry.
Cosmos, 1980
[In Pseudoscience] hypothesis are often framed precisely so that they are invulnerable to any experiment that offers a prospect of disproof, so even in principle they cannot be invalidated. Practitioners are defensive and wary. Skeptical scrutiny is opposed. When the pseudoscientific hypothesis fails to catch fire with scientists, conspiracies to suppress it are deduced.
en
The Demon-Haunted World (1995)
“Tu es fait de cent mille milliards de cellules. Nous sommes, chacun, une multitude.”
You are made of a hundred trillion cells. We are, each of us, a multitude.
en
Cosmos, 1980
Sometimes [Pseudoscience] is a kind of halfway house between old religion and new science, mistrusted by both.
en
The Demon-Haunted World (1995)
We are like butterflies who flutter for a day and think it is forever.
en
Cosmos, 1980
“99 pour cent de l'atmosphère de la Terre est d'origine biologique. Le ciel est fait de vie.”
99 per cent of the Earth's atmosphere is of biological origin. The sky is made by life.
en
Cosmos, 1980
Carl Sagan: Citations en anglais
Introduction (p. 7)
The Dragons of Eden (1977)
Introduction (p. 7)
The Dragons of Eden (1977)
“Whether we believe in God depends very much on what we mean by God.”
Source: Broca's Brain (1979), Chapter 23, “A Sunday Sermon” (p. 330)
“The best antidote for pseudoscience, I firmly believe, is science.”
Source: Broca's Brain (1979), Chapter 5, “Night Walkers and Mystery Mongers: Sense and Nonsense at the End of Science” (p. 75)
