I will not say I failed 1000 times, I will say that I discovered there are 1000 ways that can cause failure

The value of an idea lies in the using of it.

I have not failed 700 times. I have not failed once. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work.

I start where the last man left off.

Large portions of life's disappointments are individuals who did not understand that they were so near achievement when they surrendered.

X-rays ... I am afraid of them. I stopped experimenting with them two years ago, when I came near to losing my eyesight and Dally, my assistant practically lost the use of both of his arms.

Through all the years of experimenting and research, I never once made a discovery. I start where the last man left off... All my work was deductive, and the results I achieved were those of invention pure and simple.