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

You can recognize a small truth because its opposite is a falsehood. The opposite of a great truth is another truth.

Physics is the belief that a simple and consistent description of nature is possible.

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

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

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

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