Nothing exists until it is measured.

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

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

It is very difficult to make an accurate prediction, especially about the future.

When it comes to atoms, language can be used only as in poetry. The poet, too, is not nearly so concerned with describing facts as with creating images and establishing mental connections.

Anybody who is not shocked by this subject has failed to understand it. [of quantum mechanics]

An independant reality in the ordinary physical sense can neither be ascribed to the phenomenon nor to the agencies of observation.