I have to disregard everybody else, and then I can do my own work.

When things are going well, something will go wrong. / When things just can't get any worse, they will. / Anytime things appear to be going better, you have overlooked something.

Some things that satisfy the rules of algebra can be interesting to mathematicians even though they don't always represent a real situation.

Phenomena complex-laws simple....Know what to leave out.

Mathematics is a language plus reasoning. It's like a language plus logic. Mathematics is a tool for reasoning.

The Quantum Universe has a quotation from me in every chapter - but it's a damn good book anyway.

Our poets do not write about it; our artists do not try to portray this remarkable thing. I don't know why. Is nobody inspired by our present picture of the universe? The value of science remains unsung by singers... This is not yet a scientific age.