FAILURE, SUCCESS NEEDS NO EXPLANATION
You can't be afraid of failure and you can't be afraid of success, because either one gets in the way of your work.
There is no loneliness greater than the loneliness of a failure. The failure is a stranger in his own house.
FAILURE, LONELINESS OF A FAILURE
Once you start a working on something, don't be afraid of failure and don't abandon it. People who work sincerely are the happiest.
The great question is not whether you have failed, but whether you are content with failure.
If you're not failing every now and again, it's a sign you're not doing anything very innovative.