All science is either physics or stamp collecting.

Never say, "I tried it once and it did not work."

A good scientific theory should be explicable to a barmaid.

You know, I am sorry for the poor fellows that haven't got labs to work in.

You should never bet against anything in science at odds of more than about 10-12 to 1.

When we have found how the nucleus of atoms is built up we shall have found the greatest secret of all — except life. We shall have found the basis of everything — of the earth we walk on, of the air we breathe, of the sunshine, of our physical body itself, of everything in the world, however great or however small — except life.

We haven't got the money, so we've got to think.