Fools call wise men fools. A wise man never calls any man a fool.

Keep on the lookout for novel ideas that others have used successfully. Your idea has to be original only in its adaptation to the problem you're working on.

I never pick up an item without thinking of how I might improve it. I never perfected an invention that I did not think about in terms of the service it might give others. I want to save and advance human life, not destroy it. I am proud of the fact that I never invented weapons to kill. The dove is my emblem.

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

The radio craze will die out in time.

The real measure of success is the number of experiments that can be crowded into 24 hours.

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.