Gentlemen, now you will see that now you see nothing. And why you see nothing you will see presently.

I've just finished reading some of my early papers, and you know, when I'd finished I said to myself, 'Rutherford, my boy, you used to be a damned clever fellow.' (1911)

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

If your result needs a statistician then you should design a better experiment.

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

If your experiment needs statistics, you ought to have done a better experiment.

That which is not measurable is not science. That which is not physics is stamp collecting.