It is not the critic who counts; not the man who points out how the strong man stumbled or where the doer of deeds could have done them better. The credit belongs to those who are actually in the arena; whose face is marred by dust and sweat and blood, who strives valiantly, who errs, and comes short again and again, because there is no effort without error and shortcoming; who does actually try to the deed; who knows the great enthusiasm, the great devotion, and spends himself in a worthy cause; who -at the worst- if he fails, at least fails while daring greatly.
Far better it is to dare mighty things, to win glorious triumphs even though checkered by failure, than to rank with those spirits who neither enjoy nor suffer much because they live in the gray twilight that knows neither victory nor defeat.

Author: Theodore Roosevelt