《世说新语·文学》
王弼说： 圣人认为无是本体，可是无又不能解释清楚，所以言谈间必定涉及有；老子、庄子不能去掉有，所以要经常去解释那个还掌握得不充分的无。 
弼曰： 圣人体无，无又不可以训，故言必及有；老、庄未免于有，恒训其所不足。 
Wang Bi replied: The sages regarded non-being as the ultimate reality, but since non-being cannot be explained away, they are forced to introduce being into their discourse. Lao-tzu and Zhuang-tzu could not dispense with being either, and thus were forced to provide a constant stream of explanations to make up for their inadequacy in the understanding of non-being.