Thomas Edison

There is no substitute for hard work.

Show me a thoroughly satisfied man, and I will show you a failure.

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

Faith, as well intentioned as it may be, must be built on facts, not fiction--faith in fiction is a damnable false hope.

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

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

- Thomas Edison