Thomas A. Edison

Results! Why, man, I have gotten a lot of results. I know several thousand things that won't work.

Results! Why, man, I have gotten a lot of results. I know several thousand things that won't work.

The first requisite for success is the ability to apply your physical and mental energies to one problem incessantly without read more

The first requisite for success is the ability to apply your physical and mental energies to one problem incessantly without growing weary.

There is no expedient to which a man will not go to avoid the labor of thinking.

There is no expedient to which a man will not go to avoid the labor of thinking.

I never once made a discovery ... I speak without exaggeration that I have constructed three thousand different theories in read more

I never once made a discovery ... I speak without exaggeration that I have constructed three thousand different theories in connection with the electric light ... Yet in only two cases did my experiments prove the truth of my theory.

I have friends in overalls whose friendship I would not swap for the favor of the kings of the world.

I have friends in overalls whose friendship I would not swap for the favor of the kings of the world.