In our worship of certainty we must distinguish between the sound certainty and the sham, between what is gold and what is tinsel; and then, when certainty is attained, we must remember that it is not the only good; that we can buy it at too high a price; that there is danger in perpetual quiescence as well as in perpetual motion; and that a compromise must be found in a principle of growth.
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Page 17.Benjamin N. Cardozo
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Religious people often say that religion offers absolute certainty about right and wrong; 'god tells them' what it is. Even supposing that the aforementioned gods exist, and that the believers really know what the gods think, that still does not provide certainty, because any being no matter how powerful can still be wrong. Whether gods exist or not, there is no way to get absolute certainty about ethics. Without absolute certainty, what do we do? We do the best we can. Injustice is happening now; suffering is happening now. We have choices to make now. To insist on absolute certainty before starting to apply ethics to life decisions is a way of choosing to be amoral.
Richard M. Stallman
The universe is composed of matter, and, as a system, is sustained by motion. Motion is not a property of matter, and without this motion the solar system could not exist. Were motion a property of matter, that undiscovered and undiscoverable thing, called perpetual motion, would establish itself. It is because motion is not a property of matter, that perpetual motion is an impossibility in the hand of every being, but that of the Creator of motion. When the pretenders to Atheism can produce perpetual motion, and not till then, they may expect to be credited.
Thomas Paine
There is no great danger to politics in the desire for certainty at any price.
Bernard Crick
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 — teaches that the most we can hope for is successive improvement in our understanding, learning from our mistakes, an asymptotic approach to the Universe, but with the proviso that absolute certainty will always elude us.
Carl Sagan
Politics have always covered two distinct kinds of problems: problems of administrative routine, and those that may be called 'questions of the moment.'... A question of the moment is, indeed, a substitute for some notion, such as the idea of God, or hereditary monarchy, or national glory, that has hitherto acted as a symbol of human co-ordination. It provides no new positive certainty to replace the discredited certainty, but is what the name implies: the raising of a question which the old certainty no longer answers.
Laura Riding
Cardozo, Benjamin N.
Cardus, Neville
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