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.
There will one day spring from the brain of science a machine or force so fearful in its potentialities, so absolutely terrifying, that even man, the fighter, who will dare torture and death in order to inflict torture and death, will be appalled, and so abandon war forever.
Hell, there are no rules here - we're trying to accomplish something.
I never did anything by accident, nor did any of my inventions come by accident; they came by work.
I have not failed. I've just found 10,000 ways that won't work.
Non-violence leads to the highest ethics, which is the goal of all evolution. Until we stop harming all other living beings, we are still savages.