Quotes

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.

If anybody says he can think about quantum problems without getting giddy, that only show he has not understood the first thing about them.

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

Never express yourself more clearly than you are able to think.

The opposite of a correct statement is a false statement. But the opposite of a profound truth may well be another profound truth.

[spoken to a young physicist] 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. [often paraphrased as: "Your theory is crazy, but it's not crazy enough to be true."]

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

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

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

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

Every sentence I utter must be understood not as an affirmation, but as a question.

Prediction is very difficult, especially about the future.