If you're not failing every now and again, it's a sign you're not doing anything very innovative.
Success needs no explanation. Failure does not have one that matters.
FAILURE, SUCCESS NEEDS NO EXPLANATION
Failure is simply a few errors in judgment, repeated every day.
FAILURE, FEW ERRORS IN JUDGEMENT
Failure is what we're all running from, we're always running toward success with failure at our back.
FAILURE, RUNNING TOWARDS SUCCESS
Success represents the 1% of your work which results from the 99% that is called failure.