“The best lessons learned are from other peoples mistakes.”
“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.”
“Some of the best lessons we ever learn, we learn from our mistakes and failures. The error of the past is the success and wisdom of the future.”
“Smart people learn from their mistakes. But the real sharp ones learn from the mistakes of others.”
“Mistakes are a part of being human. Precious life lessons that can only be learned the hard way. Unless it's a fatal mistake, which, at least, others can learn from.”
“Some lessons you learned by the book. Others you learned from cold hard experience. The latter may not be the best way to learn, but it damn well stuck.”