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<blockquote><a href="http://quotationsbook.com/quote/22143/">Knowledge is knowing that we cannot know.</a></blockquote><br> <a href="http://quotationsbook.com/quotes/author/2294/">Emerson, Ralph Waldo</a> on <a href="http://quotationsbook.com/quotes/tag/knowledge/">knowledge</a><br> Quote from <a href="http://quotationsbook.com">Quotations Book</a>