From my Mom a Theodore Roosevelt quote :
“It is not the critic who counts nor the person who points out where the strong man stumbled, nor where the doer of deed could have done them better.
On the contrary, the credit belongs to the man who is actually in the arena — whose vision is marred by that dust and sweat and blood; who strives valiantly; who errs and comes up again and again; who knows the great devotion, the great enthusiasm; who at best knows in the end the triumph of his achievement.
However, if he fails, if he falls, at least he fails while daring greatly so that his place shall never be with those cold and timid souls who know neither victory nor defeat.”
— Theodore Roosevelt