If quantum mechanics hasn't profoundly shocked you, you haven't understood it yet.

— Niels Bohr

The most empowering Niels Bohr quotes you will be delighted to read

When we measure something we are forcing an undetermined, undefined world to assume an experimental value. We are not measuring the world, we are creating it.

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There are some things so serious you have to laugh at them.

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A physicist visits a colleague and notices a horseshoe hanging on the wall above the entrance. 'Do you really believe that a horseshoe brings luck?' he asks. 'No,' replies the colleague, 'but I've been told that it works even if you don't believe in it.'

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Niels Bohr quote Prediction is very difficult, especially

Prediction is very difficult, especially about the future.

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No, no, you're not thinking; you're just being logical.

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Your theory is crazy, but it's not crazy enough to be true.

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Address to Albert Einstein: You are not thinking. You are merely being logical.

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Niels Bohr quote An expert is a person who has made all t

An expert is a person who has made all the mistakes that can be made in a very narrow field.

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It is, indeed, perhaps the greatest prospect of humanistic studies to contribute through an increasing knowledge of the history of cultural development to that gradual removal of prejudices which is the common aim of all science.

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If an idea does not appear bizarre, there is no hope for it.

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Opposites are not contradictory but complementary.

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How wonderful that we have met with a paradox. Now we have some hope of making progress.

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It is the hallmark of any deep truth that its negation is also a deep truth.

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Sometimes the child in one behaves a certain way and the rest of oneself follows behind, slowly shaking its head.

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About Niels Bohr

Quotes 78 sayings
Nationality Danish
Profession Physicist
Birthday October 16

The very nature of the quantum theory .

.. forces us to regard the space-time coordination and the claim of causality, the union of which characterizes the classical theories, as complementary but exclusive features of the description, symbolizing the idealization of observation and description, respectively.

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Prediction is very difficult, especially if it's about the future.

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The meaning of life consists in the fact that it makes no sense to say that life has no meaning.

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Every valuable human being must be a radical and a rebel, for what he must aim at is to make things better than they are.

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We are trapped by language to such a degree that every attempt to formulate insight is a play on words.

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If we couldn't laugh at ourselves, that would be the end of everything.

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A visitor to Niels Bohr's country cottage, noticing a horseshoe hanging on the wall, teasing the eminent scientist about this ancient superstition. "Can it be true that you, of all people, believe it will bring you luck?' 'Of course not,' replied Bohr, 'but I understand it brings you luck whether you believe it or not.'

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Accuracy and clarity of statement are mutually exclusive.

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No paradox, no progress.

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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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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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When it comes to atoms, language can be used only as in poetry.

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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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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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There is no hope for any speculation that does not look absurd at first glance.

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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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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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Our task is not to penetrate the essence of things, the meaning of which we do not know anyway, but rather to develop concepts which allow us to talk in a productive way about phenomena in nature

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One thought spectra are marvellous, but it is not possible to make progress there. Just as if you have the wing of a butterfly then certainly it is very regular with the colors and so on, but nobody thought one could get the basis of biology from the coloring of the wing of a butterfly.

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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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Those who are not shocked when they first come across quantum theory cannot possibly have understood it.

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Anyone not shocked by quantum mechanics has not yet understood it.

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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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An expert is someone who knows some of the worst mistakes, which can be made, in a very narrow field.

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Truth is something that we can attempt to doubt, and then perhaps, after much exertion, discover that part of the doubt is not justified.

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Truth and clarity are complementary.

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The present state of atomic theory is characterized by the fact that we not only believe the existence of atoms to be proved beyond a doubt, but also we even believe that we have an intimate knowledge of the constituents of the individual atoms.

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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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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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You can recognize a small truth because its opposite is a falsehood.

The opposite of a great truth is another truth.

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If you aren't confused by quantum mechanics, you haven't really understood it.

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When it comes to atoms, language can be used only as in poetry.

The poet, too, is not nearly so concerned with describing facts as with creating images.

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In physics we deal with states of affairs much simpler than those of psychology and yet we again and again learn that our task is not to investigate the essence of things-we do not at all know what this would mean&mash;but to develop those concepts that allow us to speak with each other about the events of nature in a fruitful manner.

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We all know your idea is crazy. The question is whether it is crazy enough.

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The measurement we get when we measure something is not a property of the thing measured.

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Some things are so serious, they can only be joked about.

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An expert is a person who has made all the mistakes that can be made in a very narrow field.

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