《庄子·内篇·齐物论》
抓住了大道的枢纽也就抓住了事物的要害，从而顺应事物无穷无尽的变化。 是 是无穷的， 非 也是无穷的。
是亦一无穷，非亦一无穷也。故曰：莫若以明。
When you grasp the pivot of the great way, you grasp the crux of things, and thus can adapt to the endless changes of things. Right is infinite, and wrong is also infinite.