It's always good in science to say "Well how do you know that?" and "Are you really sure?" and "Could there be an exceptional case?"

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• Barack Obama

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  Friday, Aug 04, 1961
  

• Pope John Paul Ii

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• Thomas Jefferson

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• Ruth Bader Ginsburg

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• Ernest Hemingway

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• Vince Lombardi

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• Socrates

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• Pope Francis

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• George Bernard Shaw

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