An alleged scientific discovery has no merit unless it can be explained to a barmaid.

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

The greatest contributor to the feeling of tension and fear of war arose from the power of the bombing aeroplane. If all nations would consent to abolish air bombardment . . . that would mean the greatest possible release from fear.

I congratulate you both on a fine piece of work which I am sure will ultimately prove of importance. I am personally very much interested in your results... In the past I have tried a number of experiments... but without any success.

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

It was almost as incredible as if you fired a 15-inch shell at a piece of tissue paper and it came back and hit you.

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