Why does this magnificent applied science which saves work and makes life easier bring us so little happiness? ... The simple answer runs: 'Because we have not yet learned to make sensible use of it.'

Since the mathematicians have invaded the theory of relativity I do not understand it myself any more.

To punish me for my contempt for authority, fate made me an authority myself.

The Universe is a friendly place.

A perfection of means, and confusion of aims, seems to be our main problem.

Never memorize something that you can look up.

What you can't imagine, you can't discover.