Just as a poet often has license from the rules of grammar and pronunciation, we should like to ask for 'physicists' license from the rules of mathematics in order to express what we wish to say in as simple a manner as possible.

Fall in love with some activity, and do it! Nobody ever figures out what life is all about, and it doesn't matter.

As you know, a theory in physics is not useful unless it is able to predict underlined effects which we would otherwise expect.

To test whether you have learned an idea or a definition, rephrase what you just learned without using the new word.

I find that teaching and the students keep life going, and I would never accept any position in which somebody has invented a happy situation for me where I don't have to teach. Never.

One does not, by knowing all the physical laws as we know them today, immediately obtain an understanding of anything much. I love only nature, and I hate mathematicians.

Nature has a great simplicity and therefore a great beauty.