Another great quote

It is not the critic that 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 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 short again and again,
because there is not effort without error and shortcomings,
who does actually try to do 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 poor spirits
who neither enjoy nor suffer much because they live
in the grey twilight that know neither victory nor defeat.

Theodore Roosevelt
I love quotes and often print out and attach them to the verticles in the office. Keeps them in your mind instead of read and forgotten.