折疑論 2.16

2.16

吞舟之魚。不處谿塘之水（莊子。鯤魚大不知幾千里也。何難吞舟也豈隱處於淺溪小塘）。

Fish that can swallow a boat do not dwell in the waters of mountain streams and small ponds. (Zhuangzi: The Kun fish is so large one knows not how many thousands of li it extends; how could it be difficult for it to swallow a boat? How could it hide away in a shallow stream or small pond?)