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.

If we did all the things we are capable of doing, we would literally astound ourselves.

I am a vegetarian as well as a passionate anti-alcoholic, because I can thus make better use of my brain.

Genius is not inspired. Inspiration is perspiration.

I didn't fail 1000 times. The light bulb was an invention with 1000 steps.

There is no substitute for hard work.