Everyone knows the use of the useful. Few see the use of the useless.

The source

"Everyone knows the use of the useful. Few see the use of the useless." Zhuangzi said it in Zhuangzi 4 (Man in the World, Associated with Other Men). Translated from the original Chinese by Spartan Surfers.

"人皆知有用之用，而莫知无用之用也。"

Original Chinese, Zhuangzi 4 (Man in the World, Associated with Other Men). Chinese: Zhuangzi text via zh.wikisource; chapter title after Legge 1891.

Who said it

Zhuangzi (c. 369–286 BC). Taoist storyteller of the butterfly dream, the useless tree and the cook who never dulled his knife.

Questions

Who said "Everyone knows the use of the useful. Few see the use of the useless."?

Zhuangzi (c. 369–286 BC). Source: Zhuangzi 4 (Man in the World, Associated with Other Men).

What is the original Chinese?

人皆知有用之用，而莫知无用之用也。. Translated from the original Chinese by Spartan Surfers.