“The wise are not wise because they make no mistakes. They are wise because they correct their mistakes as soon as they recognize them.”

“Wise is the one who learns from another´s mistakes. Less wise is the one who learns only from his own mistakes. The fool keeps making the same mistakes again and again and never learns from them.”

“To make no mistakes is not in the power of man; but from their errors and mistakes the wise and good learn wisdom for the future.”

“Learning to be wise has a deeper purpose than just learning to be smart. To become wise, we must learn to understand and master things we do not know. Learn from the mistakes we make ourselves. Learn from the mistakes other people make, and find out how other people achieved success.”

“What a wise man knows seems so plain and simple to himself that he easily makes the mistake of thinking it to be so for others.”

“It's said that a wise person learns from his mistakes. A wiser one learns from others' mistakes. But the wisest person of all learns from others's successes.”

“The quickest way to rectify that mistake (choosing the wrong person) is by learning from that, moving on, and choosing much more wisely in the future.”

“Only while sleeping one makes no mistakes. Making mistakes is the privilege of the active—of those who can correct their mistakes and put them right.”

“If you make a mistake and do not correct it, this is called a mistake.”

“Young people should be permitted to make mistakes. As long as their general orientation is correct, let them make minor mistakes. I believe that they can correct themselves in practical work.”