Thomas A. Edison — American Inventor born on February 11, 1847, died on October 18, 1931

Thomas Alva Edison was an American inventor and businessman. He developed many devices that greatly influenced life around the world, including the phonograph, the motion picture camera, and a long-lasting, practical electric light bulb... (wikipedia)

Our greatest weakness lies in giving up. The most certain way to succeed is always to try just one more time.
Being busy does not always mean real work. The object of all work is production or accomplishment and to either of these ends there must be forethought, system, planning, intelligence, and honest purpose, as well as perspiration. Seeming to do is not doing.
Opportunity is missed by most people because it is dressed in overalls and looks like work.
There's a way to do it better - find it.
The three great essentials to achieve anything worth while are: Hard work, Stick-to-itiveness, and Common sense.