Personally, I enjoy working about 18 hours a day. Besides the short catnaps I take each day, I average about four to five hours of sleep per night.

Genius is one percent inspiration and ninety-nine percent perspiration. As a result, a genius is often a talented person who has simply done all of his homework.

I have not failed. I've just found 10,000 ways that won't work.

We don't know a millionth of one percent about anything.

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

Because I readily absorb ideas from every source - frequently starting where the last person left off - I never pick up an item without thinking of how I might improve it.

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.