The first requisite for success is to develop the ability to focus.

Of all my inventions, I liked the phonograph best

I have been at work for some time building an apparatus to see if it is possible for personalities which have left this earth to communicate with us.

From his neck down a man is worth a couple of dollars a day, from his neck up he is worth anything that his brain can produce.

Religion is all bunk.

Sticking to it is the genius.

Results? Why, man, I have gotten lots of results! If I find 10,000 ways something won't work, I haven't failed. I am not discouraged, because every wrong attempt discarded is often a step forward.