[JoseFidencioR]

Sagan citando a otro autor en Enciclopedia galactica, parafraseo (dijo con sus palabras), pero nunca dijo quien fue:

"What counts is not what sounds plausible, not what we would like to believe, not what one or two witnesses claim, but only what is supported by hard evidence rigorously and skeptically examined. Extraordinary claims require extraordinary evidence." Enciclopedia Galactica, Ch. 1 : The Most Precious Thing, p. 12.

posteriormente, fue citado sin repetir la fuente, y al parecer la frase tambien se parafraseo, pues dice en otro libro:

I would love to believe that when I die I will live again, that some thinking, feeling, remembering part of me will continue. But much as I want to believe that, and despite the ancient and worldwide cultural traditions that assert an afterlife, I know of nothing to suggest that it is more than wishful thinking.
The world is so exquisite with so much love and moral depth, that there is no reason to deceive ourselves with pretty stories for which there's little good evidence. Far better it seems to me, in our vulnerability, is to look death in the eye and to be grateful every day for the brief but magnificent opportunity that life provides.
"In the Valley of the Shadow", Parade, 10 March 1996

finally but not last, o sea, pa terminar, la frase, como tal se conoce, no existe en un libro jamas, ni siquiera en algun video/pelicula/documental pronunciado por su boca. la busqueda extensiva deja de lado reportajes/cartas y muchas otras posibles fuentes...


ah! elorigen de la frase inicial que puse, en inglés, citada por Sagan, es de Isaac Assimov.

The Roving Mind (1983)[edit]



Knowledge is indivisible. When people grow wise in one direction, they are sure to make it easier for themselves to grow wise in other directions as well.

The true artist is quite rational as well as imaginative and knows what he is doing; if he does not, his art suffers. The true scientist is quite imaginative as well as rational, and sometimes leaps to solutions where reason can follow only slowly; if he does not, his science suffers.
Don't you believe in flying saucers, they ask me? Don't you believe in telepathy? — in ancient astronauts? — in the Bermuda triangle? — in life after death?
No, I reply. No, no, no, no, and again no.
One person recently, goaded into desperation by the litany of unrelieved negation, burst out "Don't you believe in anything?"
"Yes", I said. "I believe in evidence. I believe in observation, measurement, and reasoning, confirmed by independent observers. I'll believe anything, no matter how wild and ridiculous, if there is evidence for it. The wilder and more ridiculous something is, however, the firmer and more solid the evidence will have to be."
p. 43