Even when you have doubts, take that step. Take chances. Mistakes are never a failure - they can be turned into wisdom.

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

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

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

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

It's not necessary to fear the prospect of failure but to be determined not to fail.

Outward failure may be a manifested variant of inward success.

Develop success from failures. Discouragement and failure are two of the surest stepping stones to success.

There's no such thing as failure - just waiting for success.

Failure is instructive. The person who really thinks learns quite as much from his failures as from his successes.