Thomas Edison

I have not failed. I've just found 10,000 ways that won't work.

Genius is one percent inspiration and ninety-nine percent perspiration.

The doctor of the future will give no medicine but will interest his patients in the care of the human frame, in diet, and in the cause and prevention of disease.

I never did a day's work in my life. It was all fun.

We don't know a millionth of one percent about anything.

Non-violence leads to the highest ethics, which is the goal of all evolution.

Hell, there are no rules here—we're trying to accomplish something.

I am long on ideas, but short on time. I expect to live to be only about a hundred.

I have friends in the other world. I have had very pleasant conversations with them. I am rather unorthodox in this matter.

I don't think there is any such thing as an immortal soul. I think that the soul is just a function of the brain, and when the brain dies, the soul dies.

My mind is a receptacle for everything useful. I don't care a rap for anything else.

I am not a spiritualist, but I am a firm believer in the fact that we can communicate with the beyond.

The phonograph is not of any commercial value.

I don't believe in the supernatural. I believe in nature, and I believe in science.

I am not a spiritualist. I am not a medium. I am a scientist. I am trying to build a machine to communicate with the dead.

I have a theory that the human voice is immortal. It is a form of energy that never dies. It just changes form.

There is no substitute for hard work.

Many of life's failures are people who did not realize how close they were to success when they gave up.

I never did anything worth doing by accident, nor did any of my inventions come by accident; they came by work.

I am not discouraged, because every wrong attempt discarded is another step forward.