Genius is one percent inspiration, ninety-nine percent perspiration.

To me, the idea and expectation that the day is slowly and surely coming when we will be able to honestly say we are our brother's keeper and not his oppressor is very beautiful .

There is no limit to which a man will not go to avoid thinking.

I never perfected an invention that I did not think about in terms of the service it might give others... I find out what the world needs, then I proceed to invent.

I never failed. It just didn't work 10,000 times.

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

Any large extension of the Government into business affairs - no matter what the pretense and no matter how the the extension is labeled - will be bound to promote waste and put a curb on our prosperity and progress.