I have tried to avoid long numerical computations, thereby following Riemann's postulate that proofs should be given through ideas and not voluminous computations.

The arithmetical symbols are written diagrams and the geometrical figures are graphic formulas.

The further a mathematical theory is developed, the more harmoniously and uniformly does its construction proceed, and unsuspected relations are disclosed between hitherto separated branches of the science.

Physics is much too hard for physicists.

One hears a lot of talk about the hostility between scientists and engineers. I don't believe in any such thing. In fact I am quite certain it is untrue... There cannot possibly be anything in it because neither side has anything to do with the other.

I didn't work especially hard at mathematics at school, because I knew that's what I'd be doing later.

Some people have got a mental horizon of radius zero and call it their point of view.