The entire history of science is a progression of exploded fallacies.
Having harvested all the knowledge and wisdom we can from our mistakes and failures we should put them behind us and go ahead.
Disappointments are to the soul what the thunder-storm is to the air.
There's nothing that cleanses your soul like getting the hell kicked out of you.
No experiment is ever a complete failure. It can always be used as a bad example.
If you're not failing you're not trying anything.
Man must strive and in striving he must err.
He alone fails who gives up and lies down.
Supposing you have tried and failed again and again. You may have a fresh start any moment you choose for this thing that we call "failure" is not the falling down but the staying down.
You must accept that you might fail then if you do your best and still don't win at least you can be satisfied that you've tried.
If I lose I'll walk away and never feel bad.... Because I did all I could there was nothing more to do.
Fool me once shame on you fool me twice shame on me.
Do not be afraid of mistakes providing you do not make the same one twice.
I've arrived at this outermost edge of my life by my own actions. Where I am is thoroughly unacceptable. Therefore I must stop doing what I have been doing.
Only he who does nothing makes no mistakes.
Losses are comparative imagination only makes them of any moment.
When I have listened to my mistakes I have grown.
I am not ashamed of my failures. It is only a foot-stones for building my success.
Sometimes a noble failure serves the world as faithfully as a distinguished success.
I cannot give you the formula for success but I can give you the formula for failure: try to please everybody.