An expert is a man who has made all the mistakes which can be made, in a narrow field.
NIELS BOHRThere are two sorts of truth: trivialities, where opposites are clearly absurd, and profound truths, recognised by the fact that the opposite is also a profound truth.
More Niels Bohr Quotes
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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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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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Truth and clarity are complementary.
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If you have a correct statement, then the opposite of a correct statement is of course an incorrect statement, a wrong statement. But when you have a deep truth, then the opposite of a deep truth may again be a deep truth.
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It is the hallmark of any deep truth that its negation is also a deep truth.
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Every sentence I utter must be understood not as an affirmation, but as a question.
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When it comes to atoms, language can be used only as in poetry.
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There is no hope for any speculation that does not look absurd at first glance.
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The best weapon of a dictatorship is secrecy, but the best weapon of a democracy should be the weapon of openness.
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A person who wasn’t outraged on first hearing about quantum theory didn’t understand what had been said.
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Accuracy and clarity of statement are mutually exclusive.
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What is that we human beings ultimately depend on? We depend on our words. We are suspended in language. Our task is to communicate experience and ideas to others.
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Nothing exists until it is measured.
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It is not enough to be wrong, one must also be polite.
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Isolated material particles are abstractions, their properties being definable and observable only through their interaction with other systems .
NIELS BOHR






