Joe Schreiber, an Emmy award winning producer and one of our NSF workshop trainers, used this quotation last week with the recruits who had to stand up and speak before the group. It is so amazing that I just had to repost it from this source, which I hope is reliable:
It is not the critic who counts: not the man who points out how the strong man stumbles or where the doer of deeds could have done better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood, who strives valiantly, who errs and comes up short again and again, because there is no effort without error or shortcoming, but who knows the great enthusiasms, the great devotions, who spends himself for a worthy cause; who, at the best, knows, in the end, the triumph of high achievement, and who, at the worst, if he fails, at least he fails while daring greatly, so that his place shall never be with those cold and timid souls who knew neither victory nor defeat. -- "Citizenship in a Republic," Speech at the Sorbonne, Paris, April 23, 1910
I guess football coaches use this one a lot. It's kind of the tough guy version of "'Tis better to have loved and lost: Than never to have loved at all." I like it.