Back to the Classics: ECREP! Golden Oldie of apologetics
Carl Sagan
I have a page dealing with this concept on Doxa, but it's not very good. This is a better version. I will combine the two eventually. The New Version is on my New Sight: The Religious A priori
Carl Sagan made this statement popular in its current form, it was originally used by Hume, Laplace and other early theorists, but atheists have sense taken it as a major slogan for their decision-making paradigm.
Marcelo Truzzi tells us:
In his famous 1748 essay Of Miracles, the great skeptic David Hume asserted that "A wise man...proportions his belief to the evidence,"and he said of testimony for extraordinary claims that "the evidence, resulting from the testimony, admits of a diminution, greater or less, in proportion as the fact is more unusual." A similar statement was made by Laplace, and many other later writers. I turned it into the now popular phrase "extraordinary claims require extraordinary proof" (which Carl Sag...