The world will never appreciate the good you do a million times

One day a school teacher wrote
on the board the following:
9×1=7
9×2=18
9×3=27
9×4=36
9×5=45
9×6=54
9×7=63
9×8=72
9×9=81
9×10=90
When she was done, she looked
to the students and they were all
laughing at her, because of the
first equation which was wrong,
and then the teacher said the
following,
"I wrote that first one wrong on
purpose, because I wanted you
to learn something important.
This was for you to know how
the world out there will treat you.
You can see that I wrote RIGHT 9
times, but none of you
congratulated me for it; you all
laughed and criticized me
because of one wrong thing I
did.
So this is the lesson...:
'The world will never appreciate
the good you do a million times,
but will criticize the one wrong
thing you do... But don't get
discouraged,
ALWAYS RISE ABOVE ALL THE
LAUGHTER AND CRITICISM. STAY
STRONG.'