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

“Smart people learn from their mistakes. But the real sharp ones learn from the mistakes of 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.”

“Some of us learn from other people’s mistakes and the rest of us have to be other people.”

“It is better to learn from the mistakes of others than that others should learn from you.”
Te de aliis, quam alios de te suaviu’st.

“If one cannot learn from the mistakes of others, one might as well become a Democrat.”

“We learn a lot from the mistakes of others, but even more from our own.”

“Some of the best lessons we ever learn are learned from past mistakes. The error of the past is the wisdom and success of the future.”

“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.”

“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.”