<bdi><a href="https://en.wikipedia.org/wiki/en:Immanuel_Kant" class="extiw" title="w:en:Immanuel Kant"><span title="German philosopher (1724–1804)">Immanuel Kant</span></a>
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<a rel="nofollow" class="external text" href="http://posner.library.cmu.edu/Posner/books/book.cgi?call=193_K16C_1781">Posner Memorial Collection in Electronic Format</a>