Failure is nature's plan to prepare you for great responsibilities.

Defeat is not the worst of failures. Not to have tried is the true failure.

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

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

We may be personally defeated, but our principles never!

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

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

There is no loneliness greater than the loneliness of a failure. The failure is a stranger in his own house.

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

The great question is not whether you have failed, but whether you are content with failure.