An independant reality in the ordinary physical sense can neither be ascribed to the phenomenon nor to the agencies of observation.
Niels BohrRead
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.'
Interpretation
This quote emphasizes that physics describes nature through abstractions rather than revealing an ultimate reality.
Niels Bohr's quote highlights the distinction between the tangible world of nature and the abstract representations that physics provides. He argues that physics should not be viewed as a means to uncover the true essence of reality but rather as a discipline focused on the predictive descriptions and relationships that we can observe and articulate about nature, suggesting that our knowledge is inherently limited to these abstractions.
In practice
In a science lecture discussing the philosophy of physics.
An independant reality in the ordinary physical sense can neither be ascribed to the phenomenon nor to the agencies of observation.
An expert is a man who has made all the mistakes which can be made, in a narrow field.
Those who are not shocked when they first come across quantum theory cannot possibly have understood it.
When searching for harmony in life one must never forget that in the drama of existence we are ourselves both actors and spectators.
And anyone who thinks they can talk about quantum theory without feeling dizzy hasn't yet understood the first thing about it.
Everything we call real is made of things that cannot be regarded as real.
[Concerning] the usual contempt with which an orthodox analytic group treats all outsiders and strangers ... I urge you to think of the young psychoanalysts as your colleagues, collaborators and partners and not as spies, traitors and wayward children. You can never develop a science that way, only an orthodox church.
Science and everyday life cannot and should not be separated.
Do not imagine that mathematics is hard and crabbed, and repulsive to common sense. It is merely the etherealization of common sense.
What is especially striking and remarkable is that in fundamental physics a beautiful or elegant theory is more likely to be right than a theory that is inelegant.
I tried out various experiments described in treatises on physics and chemistry, and the results were sometimes unexpected. At times, I would be encouraged by a little unhoped-for success; at others, I would be in the deepest despair because of accidents and failures resulting from my inexperience.
I do not want to drive across a bridge designed by an engineer who believed the numbers in structural stress models are relative truths.
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