“The wisest mind hath something yet to learn.”
“The wisest mind has something yet to learn.”
“The wisest man has something yet to learn.”
“Death, that hath suck'd the honey of thy breath hath had no power yet upon thy beauty.”
“So it is that there is nothing to be taught, but yet there is something to be learned.”
“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.”