I do not believe any type of religion should ever be introduced into the public schools of the United States.

Do the thing and the power will come.

I believe in the existence of a Supreme Intelligence pervading the Universe.

I know of over 3,000 ways [that] a light bulb does not work.

There is no substitute for hard work.

Invention is 1% inspiration and 99% perspiration

There is far more opportunity than there is ability.