《明史·列传·卷六十七》
万事发源于人欲，那么自身即无主张，万事失去纲常，宦官就趁势寻找到时机，蒙蔽陛下。
发于人欲，则一身无主，万事失纲，投间抵隙，蒙蔽得施。
If everything comes from human desire, then oneself has no main opinion, and everything loses its right path, eunuchs will find an opportunity to flatter Your Majesty.