They say President Wilson has blundered. Perhaps he has, but I notice he usually blunders forward.

I will not say I failed 1000 times, I will say that I discovered there are 1000 ways that can cause failure

I have not failed. I have successfully discovered 1200 ideas that don't work.

I did not fail two thousand times. I merely found two thousand ways not to make a lightbulb.

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.

It is apparent to me that the possibilities of the aeroplane, which two or three years ago were thought to hold the solution to the [flying machine] problem, have been exhausted, and that we must turn elsewhere.

The doctor of the future will no longer treat the human frame with drugs, but rather will cure and prevent disease with nutrition.