"Extraordinary claims require…" — Carl Sagan

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非凡的主张需要非凡的证据。

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Translations

MORE QUOTES BY Carl Sagan

“It pays to keep an open mind, but not so open ”

Carl Sagan

“Extinction is the rule. Survival is the exception”

“We are like butterflies who flutter for a day and think it is forever.”

“Science is not only compatible with spirituality; it is a profound source of spirituality.”

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