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

Don't be afraid of missing opportunities. Behind every failure is an opportunity somebody wishes they had missed.

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.

Do not fear mistakes. You will know failure. Continue to reach out.

Success is never final, failure is never fatal. It's courage that counts.

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

Outward failure may be a manifested variant of inward success.

Success is not final, failure is not fatal: it is the courage to continue that counts.

Failure is more frequently from want of energy than want of capital.

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