Truth and clarity are complementary.

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

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.

You must come to Copenhagen to work with us. We like people who can actually perform thought experiments!

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

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

Accuracy and clarity of statement are mutually exclusive.