I loved this quote by JK Rowling in her commencement speech at Harvard University:
"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. "
You can read the full speech here, which I suppose is not too long, definitely inspiring, AND it has a sprinkling of witty Potter jokes. Never too late to commence, I've always said. (OK, I'm saying it now, alright?)
To find the speech you will need to scroll past the article about the many Harvard grads who thought a mere children's book author was a little beneath their dignity and just beyond the part where the 12 year old Potter fan who skipped school, dressed up like Harry himself, and traveled from New York to hear Rowling speak calls those stuffy Harvard Grads "muggles" and follows up with a harsh "phooey on them".