If you can't explain it simply, you don't understand it well enough.

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

Conventional words or other signs have to be sought for laboriously only in a second stage, where the associative play already referred to is sufficiently established and can be reproduced at will.

If I were not a Jew I would be a Quaker.

There is a driving force more powerful than steam, electricity and nuclear power: the will.

At least once a day, allow yourself the freedom to think and dream for yourself.

Dr. Einstein: Yes; But this year the answers are different.