Those who are not shocked when they first come across quantum theory cannot possibly have understood it.

It is wrong to think that the task of physics is to find out how nature is. Physics concerns what we say about 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

When we measure something we are forcing an undetermined, undefined world to assume an experimental value. We are not measuring the world, we are creating it.

Everything we call real is made of things that cannot be regarded as real.

Einstein, stop telling God what to do!

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