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<blockquote><a href="http://quotationsbook.com/quote/46380/">You don't know how much you know until you know how much you don't know.</a></blockquote><br> <a href="http://quotationsbook.com/quotes/author/8063/">Unknown</a> on <a href="http://quotationsbook.com/quotes/tag/knowledge/">knowledge</a><br> Quote from <a href="http://quotationsbook.com">Quotations Book</a>