No theory of reality compatible with quantum theory can require spatially separate events to be independent.

- John Stewart Bell

The concept of 'measurement' becomes so fuzzy on reflection that it is quite surprising to have it appearing in physical theory at the most fundament…

- John Stewart Bell

I am a Quantum Engineer, but on Sundays I Have Principles.

- John Stewart Bell

It is difficult for me to believe that quantum mechanics, working very well for currently practical set-ups, will nevertheless fail badly with improv…

- John Stewart Bell

Long may Louis de Broglie continue to inspire those who suspect that what is proved by impossibility proofs is lack of imagination.

- John Stewart Bell

Theoretical physicists live in a classical world, looking out into a quantum-mechanical world. The latter we describe only subjectively, in terms of …

- John Stewart Bell