From the commencement address she gave at Harvard in 2008.

Inspiring: http://harvardmagazine.com/commencement/the-fringe-benefits-failure-the-importance-imagination

So why do I talk about the benefits of failure? Simply because failure meant a stripping away of the inessential. I stopped pretending to myself that I was anything other than what I was, and began to direct all my energy into finishing the only work that mattered to me.

You might never fail on the scale I did, but some failure in life is inevitable. It is impossible to live without failing at something, unless you live so cautiously that you might as well not have lived at all – in which case, you fail by default.

That sentiment is often echoed by some of the pop heroes of the geek world. Raganwald comes to mind.