Maturity is often more absurd than youth and very frequently is most unjust to youth.

There cannot be overproduction of anything which men and women want. And their wants are unlimited, except by the size of their stomachs.

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 have not failed 10,000 times. I have succeeded in proving that those 10,000 ways will not work.

I never failed once. It just happened to be a 2000-step process.

I find out what the world needs. Then I go ahead and try to invent it

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