I have never failed, I've only shown the way I did it before doesn't work.

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

Many of life's failures are people who did not realize how close they were to success when they gave up.

When you have exhausted all possibilities, remember this - you haven't.

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

If you want to succeed, get some enemies.