My great concern is not whether you have failed, but whether you are content with your failure.

Success consists of going from failure to failure without loss of enthusiasm.

Failure is not fatal, but failure to change might be.

The most important of my discoveries have been suggested to me by my failures.

It is not a disgrace to fail. Failing is one of the greatest arts in the world.

Once you can accept failure, you can have fun and success.

We may be personally defeated, but our principles never!

Failure doesn't kill you... it increases your desire to make something happen.

You can't be afraid of failure and you can't be afraid of success, because either one gets in the way of your work.

Once you start a working on something, don't be afraid of failure and don't abandon it. People who work sincerely are the happiest.