• Carl Sagan Extraordinary claims require extraordinary evidence.
    Source: Cosmos: A Personal Voyage afl. 12, 14-12-1980
    Carl Sagan
    American astronomer, cosmologist, astrophysicist and author 1934-1996
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Carl Sagan - Extraordinary claims require extraordinary evidence.
Extraordinary claims require extraordinary evidence. by : Carl Sagan
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yellow-wheat Extraordinary claims require extraordinary evidence.
- Carl Sagan Greatest-Quotations.com