A Quote by Carl Sagan

Extraordinary observations require extraordinary evidence to make them believable.

Carl Sagan

Quote Topics

Believable Evidence Extraordinary Make Observations Require Them

Quote Author

Carl Sagan
American - Scientist
November 9, 1934 - December 20, 1996

Extraordinary observations require extraordinary evidence.

Buzz Aldrin

I believe that the extraordinary should be pursued. But extraordinary claims require extraordinary evidence.

Carl Sagan

Forgotten were the elementary rules of logic, that extraordinary claims require extraordinary evidence and that what can be asserted without evidence can also be dismissed without evidence.

Christopher Hitchens

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.

Carl Sagan

For years I've been stressing with regard to UFOs that extraordinary claims require extraordinary evidence.

Carl Sagan

Extraordinary claims require extraordinary evidence, and it is my job, my responsibility, as an astronomer to remind people that alien hypotheses should always be a last resort.

Tabetha S. Boyajian

Extraordinary allegations require extraordinary evidence.

Lance Armstrong

you have often seen in the cinema, erich, haven't you, that between extraordinary people extraordinary things like for example extraordinary love can arise. so we only have to be extraordinary and see what happens.

Elfriede Jelinek

Extraordinary claims demand extraordinary evidence

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.

Carl Sagan

Achievement does not require extraordinary ability. Achievement comes from ordinary abilities applied with extraordinary persistence.

Ralph Marston

Extraordinary afflictions are not always the punishment of extraordinary sins, but sometimes the trial of extraordinary graces.

Matthew Henry

Extraordinary things only happen to extraordinary people. Maybe it's a sign that you've got an extraordinary destiny--something greater than you could've imagined.

C. S. Lewis

Being honest is what counts. To make the ordinary extraordinary is so much better than starting with the extraordinary.

Ricky Gervais

If there are opportunities, seize them and be prepared for them, and be the best, if that's what it takes. If you have to be extraordinary, then be extraordinary.