No paradox, no progress.
NIELS BOHRNever express yourself more clearly than you are able to think.
More Niels Bohr Quotes
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One must always do what one really cannot.
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We are all agreed that your theory is crazy. The question which divides us is whether it is crazy enough to have a chance of being correct. My own feeling is that it is not crazy enough.
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All rising curves that show unwelcome trends in human affairs will approach infinity if extended far enough, but it is we who dictate the curve and not vice versa.
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If you aren’t confused by quantum mechanics, you haven’t really understood it.
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You must come to Copenhagen to work with us. We like people who can actually perform thought experiments!
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In our description of nature the purpose is not to disclose the real essence of the phenomena but only to track down, so far as it is possible, relations between the manifold aspects of our experience.
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Nothing exists until it is measured.
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Anyone who can contemplate quantum mechanics without getting dizzy hasn’t understood it.
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Isolated material particles are abstractions, their properties being definable and observable only through their interaction with other systems .
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The great extension of our experience in recent years has brought light to the insufficiency of our simple mechanical conceptions and, as a consequence, has shaken the foundation on which the customary interpretation of observation was based.
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Every sentence I utter must be understood not as an affirmation, but as a question.
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It is a great pity that human beings cannot find all of their satisfaction in scientific contemplativeness.
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Of course I don’t believe in it pointing to horseshoe on his office wall. But I understand that it brings you luck whether you believe in it or not.
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The opposite of a fact is falsehood, but the opposite of one profound truth may very well be another profound truth.
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Physics is the belief that a simple and consistent description of nature is possible.
NIELS BOHR