Thomas A. Edison

Restlessness and discontent are the necessities of progress.

Restlessness and discontent are the necessities of progress.

Be courageous. I have seen many depressions in business. Always America has emerged from these stronger and more prosperous. Be read more

Be courageous. I have seen many depressions in business. Always America has emerged from these stronger and more prosperous. Be brave as your fathers before you. Have faith! Go forward!

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.

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.

There will one day spring from the brain of science a machine or force so fearful in its potentialities, so read more

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.