Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so. Douglas Adams
A wise man can learn more from a foolish question than a fool can learn from a wise answer. Bruce Lee
Every man I meet is in some way my superior, and I can learn from him. Ralph Waldo Emerson
The only thing we learn from new elections is we learned nothing from the old. American Proverb
We learn from our mistakes. Italian Proverb
Unfortunates learn from their own mistakes, and the lucky ones learn from other's mistakes. Afghan Proverb