《淮南子·道应训》
在这件事上，桓公做对了，因此他果真得了一位人才。所以《老子》说： 天大、地大、道大、王亦大。
故老子曰： 天大，地大，道大，王亦大。
In this matter, Duke Huan did the right thing, so he really gained a talent. Therefore, the Tao Te Ching said: Heaven is great, earth is great, the way is great, and the king is also great.