It is astonishing what an effort it seems to be for many people to put their brains definitely and systematically to work.

One might think that the money value of an invention constitutes its reward to the man who loves his work. But... I continue to find my greatest pleasure, and so my reward, in the work that precedes what the world calls success.

Results! Why, man, I have gotten a lot of results. I know several thousand things that won't work.

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