I have not failed. I've just found 10,000 ways that won't work.

But man is not made for defeat. A man can be destroyed but not defeated.

I can accept failure, everyone fails at something. But I can't accept not trying.

Nothing in this world can take the place of persistence. Talent will not: nothing is more common than unsuccessful men with talent. Genius will not; unrewarded genius is almost a proverb. Education will not: the world is full of educated derelicts. Persistence and determination alone are omnipotent.

Far better is it to dare mighty things, to win glorious triumphs, even though checkered by failure... than to rank with those poor spirits who neither enjoy nor suffer much, because they live in a gray twilight that knows not victory nor defeat.

Every adversity, every failure, every heartache carries with it the seed of an equal or greater benefit.

A failure is not always a mistake, it may simply be the best one can do under the circumstances. The real mistake is to stop trying.

It's fine to celebrate success but it is more important to heed the lessons of failure.

Failures, repeated failures, are finger posts on the road to achievement. One fails forward toward success.

Mistakes are the portals of discovery.

There is no such thing as failure. There are only results.

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

Ambition is the last refuge of the failure.

Do not be embarrassed by your failures, learn from them and start again.