I can accept failure, everyone fails at something. But I can't accept not trying.
Experience is simply the name we give our mistakes.

Mistakes are the usual bridge between inexperience and wisdom.

Our greatest glory is not in never falling, but in rising every time we fall.
Don't be embarrassed by your failures, learn from them and start again.
I have not failed. I've just found 10,000 ways that won't work.
The only real mistake is the one from which we learn nothing.
Failure is simply the opportunity to begin again, this time more intelligently.
It's not whether you get knocked down, it's whether you get up.
It is hard to fail, but it is worse never to have tried to succeed.
It's not that I'm so smart, it's just that I stay with problems longer.
Success is stumbling from failure to failure with no loss of enthusiasm.