Claims that cannot be tested, assertions immune to disproof are veridically worthless, whatever valu...

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Claims that cannot be tested, assertions immune to disproof are veridically worthless, whatever value the may have in inspiring us or in exciting our sense of wonder.

Carl Sagan

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Carl Sagan

American astrophysicist, cosmologist, author and science educator

November 9th, 1934 - December 20th, 1996

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