All things are made of atoms - little particles that move around in perpetual motion, attracting each other when they are a little distance apart, but repelling upon being squeezed into one another. In that one sentence, you will see, there is an enormous amount of information about the world, if just a little imagination and thinking are applied.

I think it's much more interesting to live not knowing than to have answers which might be wrong.

What would happen if we could arrange the atoms one by one the way we want them?

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

A philosopher once said, 'It is necessary for the very existence of science that the same conditions always produce the same results.' Well, they don't!

Our freedom to doubt was born out of a struggle against authority in the early days of science. It was a very deep and strong struggle: permit us to question - to doubt - to not be sure. I think that it is important that we do not forget this struggle and thus perhaps lose what we have gained.

Turbulence is the most important unsolved problem of classical physics.