I cannot believe in the immortality of the soul. No, all this talk of an existence for us, as individuals, beyond the grave is wrong. It is born of our tenacity of life - our desire to go on living - our dread of coming to an end.

Nineteen hundred and three will bring great advances in surgery, in the study of bacteria, in the knowledge of the cause and prevention of disease. Medicine is played out. Every new discovery of bacteria shows us all the more convincingly that we have been wrong and that the million tons of stuff we have taken was all useless.

I love great music and art, but I think 'cubist' songs and paintings are hideous.

Two per cent. is genius, and ninety-eight per cent. is hard work.

Failure is really a matter of conceit. People don't work hard because, in their conceit, they imagine they'll succeed without ever making an effort. Most people believe that they'll wake up some day and find themselves rich. Actually, they've got it half right, because eventually they do wake up.

Sticking to it is the genius.

I never once failed at making a light bulb. I just found out 99 ways not to make one.