The great object is to find the theory of the matter [of X-rays] before anyone else, for nearly every professor in Europe is now on the warpath.

All science is either physics or stamp collecting.

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

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

The great object is to find the theory of the matter [of X-rays] before anyone else, for nearly every professor in Europe is now on the warpath.

If, as I have reason to believe, I have disintegrated the nucleus of the atom, this is of greater significance than the war.

Should a young scientist working with me come to me after two years of such work and ask me what to do next, I would advise him to get out of science. After two years of work, if a man does not know what to do next, he will never make a real scientist.