Niels Bohr Quotes

Every sentence I utter must be understood not as an affirmation but as a question.[A caution he gives his students, to be wary of dogmatism.]

There are trivial truths and there are great truths. The opposite of a trivial truth is plainly false. The opposite of a great truth is also true.

It is not enough to be wrong, one must also be polite.

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

Everything we call real is made of things that cannot be regarded as real.

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