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玄之又玄，众妙之门。<script>document.writeln(qsbs.bb('PHA+6ICB5a2QOuOAjOmBk+W+t+e2k+OAjTrnrKzkuoznq6A8L3A+'));</script>

老子:「道德經」:第二章<script>document.writeln(qsbs.bb('PHA+5aSp5LiL55qG55+l576O5LmL5Li6576O77yM5pav5oG25bey44CCPC9wPg=='));</script>

天下皆知美之为美，斯恶已。<script>document.writeln(qsbs.bb('PHA+55qG55+l5ZaE5LmL5Li65ZaE77yM5pav5LiN5ZaE5bey44CCPC9wPg=='));</script>

皆知善之为善，斯不善已。<script>document.writeln(qsbs.bb('PHA+5pyJ5peg55u455Sf77yM6Zq+5piT55u45oiQ77yM6ZW/55+t55u45b2i77yMPC9wPg=='));</script>

有无相生，难易相成，长短相形，<script>document.writeln(qsbs.bb('PHA+6auY5LiL55u455uI77yM6Z+z5aOw55u45ZKM77yM5YmN5ZCO55u46ZqP44CCPC9wPg=='));</script>

高下相盈，音声相和，前后相随。<script>document.writeln(qsbs.bb('PHA+5oGS5Lmf44CC5piv5Lul5Zyj5Lq65aSE5peg5Li65LmL5LqL77yMPC9wPg=='));</script>

恒也。是以圣人处无为之事，<div id="z78fgsn46h">