Thinking out loud/quotes/sarcasm

21

A teacher wrote this on his boards

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 he was done he looked to the students and they were all laughing at him, because of the first equation which was wrong, and then the teacher said the following.

"I wrote that first one on purpose, because I wanted to teach you to learn something important. This was for you to know how the world out there will treat you. You can see I wrote the right answer 9 time but none of you congratulated me for it; you all laughed and criticized me because of the 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 one you do... But don't get discouraged.