Thomas A. Edison

I find my greatest pleasure, and so my reward, in the work that precedes what the world calls success.

I find my greatest pleasure, and so my reward, in the work that precedes what the world calls success.

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.

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.