I have always consistently opposed high-tension and alternating systems of electric lighting...not only on account of danger, but because of their general unreliability and unsuitability for any general system of distribution.

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

Never Say I Failed 99 Times, Say I Discovered 99 Ways Which Causes Failure!

A genius is a talented person who does his homework.

Of all my inventions, I liked the phonograph best

The trouble with most people is that they quit before they start.

To do much clear thinking a person must arrange for regular periods of solitude when they can concentrate and indulge the imagination without distraction.