Quote of Shakespeare

A fool thinks himself to be wise, but a wise man knows himself to be a fool-
William Shakespeare


Possible Meaning: (open to discussion) 
A truly wise person knows that the world and knowledge is so vast and large.
He realises he can never know everything. There is always another person who has
knowledge of something he doesn't have.
A foolish person believes himself to know all and be right. He's narrow minded.
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