《论衡·卷十七·是应篇》
所以屈轶这种草，或许根本没有而是凭空捏造出来的，或许真有这种草而捏造说它能指出佞人。假定这种草能指人，也可能是这种草生来见了人就会动。
故夫屈轶之草，或时无有而空言生，或时实有而虚言能指，假令能指，或时草性见人而动。
Therefore, this kind of Qu Yi grass may not exist at all, but was made out of thin air, or there may be such a kind of grass, but it is a fabrication that it can point out treacherous people. Assuming that this kind of grass can point people out, it is also possible that this kind of grass will move when it sees people.