If you can't fly, run; if you can't run, walk; if you can't walk, crawl; but by all means keep moving.

Each time you fail, you have eliminated another wrong option.

People are not remembered by how few times they fail, but by how often they succeed. Every wrong step is another step forward.

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

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

The biggest failure of man is that he gives up before he realizes how close he was to success.