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

When searching for harmony in life one must never forget that in the drama of existence we are ourselves both actors and spectators.

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

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

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

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.'

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