• Carl Sagan For all I know we may be visited by a different extraterrestrial civilization every second Tuesday, but there's no support for this appealing idea. The extraordinary claims are not supported by extraordinary evidence.
    Source: Cosmos: A Personal Voyage (1990) 7 min 25 sec
    Carl Sagan
    American astronomer, cosmologist, astrophysicist and author 1934-1996
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Carl Sagan - For all I know we may be visited by a different extraterrestrial civilization every second Tuesday, but there's no support for this appealing idea. The extraordinary claims are not supported by extraordinary evidence.
For all I know we may be visited by a different extraterrestrial civilization every second Tuesday, but there's no support for this appealing idea. The extraordinary claims are not supported by extraordinary evidence. by : Carl Sagan

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mountains-with-lake For all I know we may be visited by a different extraterrestrial civilization every second Tuesday, but there's no support for this appealing idea. The extraordinary claims are not supported by extraordinary evidence.
- Carl Sagan Greatest-Quotations.com