The only person who never makes a mistake is someone who does nothing.

Albert Einstein once wrote on a chalkboard:

9 x 1 = 9

9 x 2 = 18

9 x 3 = 27

9 x 4 = 36

9 x 5 = 45

9 x 6 = 54

9 x 7 = 63

9 x 8 = 72

9 x 9 = 81

9 x 10 = 91

Suddenly chaos erupted in the classroom because Einstein made a mistake. Obviously, the correct answer to 9 × 10 isn’t 91. And all his students ridiculed him.

Einstein waited for everyone to be silent and said:

“Despite the fact that I analyzed nine problems correctly, no one congratulated me. But when I made one mistake, everyone started laughing. This means that even if a person is successful, society will notice his slightest mistake. And they'll like that. So don't let criticism destroy your dreams. The only person who never makes a mistake is someone who does nothing."