“Humans may crave absolute certainty; they may aspire to it; they may pretend, as partisans of certain religions do, to have attained it. But the history of science — by far the most successful claim to knowledge accessible to humans… — Carl Sagan Copy Share Image
Absolute certainty will always elude us. We will always be mired in error. The most each generation can hope for is to reduce the error. . . . — Carl Sagan Copy Share Image
