“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.”
“A smart person learns from his mistakes, but a truly wise person learns from the mistakes of others.”
“A man must be big enough to admit his mistakes, smart enough to profit from them, and strong enough to correct them.”
“Live to learn and you will really learn to live.”
“Only a fool learns from his own mistakes. The wise man learns from the mistakes of others.”
“Real leadership is being the person others will gladly and confidently follow.”
“The greatest mistake we make is living in constant fear that we will make one.”