This is not very important what I'm doing. I'm just proving something.

That is the logical tight-rope on which we have to walk if we wish to interpret nature.

We absolutely must leave room for doubt or there is no progress and no learning. There is no learning without having to pose a question. And a question requires doubt. People search for certainty. But there is no certainty.

I think I can safely say that nobody understands Quantum Mechanics.

Nature uses only the longest threads to weave her patterns, so that each small piece of her fabric reveals the organization of the entire tapestry.

When the problem [quantum chromodynamics] is finally solved, it will all be by imagination. Then there will be some big thing about the great way it was done. But it's simple -it will all be by imagination, and persistence.

We have this terrible struggle to try to explain things to people who have no reason to want to know.