When asked ... [about] an ...

When asked ... [about] an underlying quantum world, Bohr would answer, 'There is no quantum world. There is only an abstract quantum physical description. It is wrong to think that the task of physics is to find out how nature is. Physics concerns what we can say about Nature.'
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 Niels Bohr

Quotes from the same author

How wonderful that we have met with a paradox. Now we have some hope of making progress.
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 Niels Bohr
Never express yourself more clearly than you are able to think.
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 Niels Bohr
Isolated material particles are abstractions, their properties being definable and observable only through their interaction with other systems .
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 Niels Bohr
There 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
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 Niels Bohr
There is no hope for any speculation that does not look absurd at first glance.
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 Niels Bohr