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— Bertrand Russell"All that passes for knowledge can be arranged in a hierarchy of degrees of certainty, with arithmetic and the facts of perception at the top."
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Uncle Scrooge preferred to let the poor die "and decrease the surplus population." Scrooge may not have had God on his side, but his arithmetic was impeccable.
— Roger Rosenblatt
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While the dogmatist is harmful, the sceptic is useless ...; one is certain of knowing, the other of not knowing. What philosophy should dissipate is certainty, whether of knowledge or of ignorance. Knowledge is not so precise a concept as is commonly thought. Instead of saying 'I know this', we ought to say 'I more or less know something more or less like this'. ... Knowledge in practical affairs has not the certainty or the precision of arithmetic.
— Bertrand Russell
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