I would see the end of physics as we know it, but now I think the wonder of discovery will continue long after I am gone. We are close to some of these answers, but we are not there yet.

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How do we know that we are not just characters in a computer-generated soap opera?

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The basic assumption of science is scientific determinism.

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Go the extra mile. It makes your boss look like an incompetent slacker.

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The thing about smart people is that they seem like crazy people to dumb people.

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[If] there were such a God, I would like to ask however did he think of anything as complicated as M-theory in eleven dimensions.

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I have experimental evidence that time travel is not possible.

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We are in danger of destroying ourselves by our greed and stupidity. We cannot remain looking inwards at ourselves on a small and increasingly polluted and overcrowded planet.

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One of the basic rules of the universe is that nothing is perfect. Perfection simply doesn't exist.....Without imperfection, neither you nor I would exist

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The wise never marry, and when they marry they become otherwise.

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