“The only real mistake is the one from which we learn nothing.”

“We learn, when we learn, only from experience, and then we only learn from our mistakes. Our successes only serve to reinforce our superstitions.”

“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.”

“Mistakes are a part of being human. Appreciate your mistakes for what they are: precious life lessons that can only be learned the hard way. Unless it's a fatal mistake, which, at least, others can learn from.”

“They say we learn from mistakes, that’s why they mistake me.”

“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.”

“Nothing fails like success because we don't learn from it. We learn only from failure.”

“He who does nothing makes no mistakes; he who makes no mistakes learns nothing.”

“Real understanding does not come from what we learn in books; it comes from what we learn from love of nature, of music, of man. For only what is learned in that way is truly understood.”

“Learn from the mistakes of others and avoid being one whose mistakes are used as lessons by others.”