《庄子·外篇·秋水》
河神说： 世间议论的人们总是说： 最细小的东西没有形体可寻，最巨大的东西不可限定范围 。
河伯曰： 世之议者皆曰： 至精无形，至大不可围。 
The River God said: The people of the world who like to argue always say: The most microscopic things have no form that can be sought out, and the most colossal things cannot be confined into a definite boundary.