If you're not failing every now and again, it's a sign you're not doing anything very innovative.

Failure happens all the time. It happens every day in practice. What makes you better is how you react to it.

Enjoy failure and learn from it. You can never learn from success.

We may be personally defeated, but our principles never!

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

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

Admitting failure is quite cleansing, but never - pleasurable.

The only real failure in life is not to be true to the best one knows.

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.

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