《淮南子·道应训》
所以《老子》说： 虽然知道什么是荣耀，却安守卑辱，甘愿处于天下低微的地位。 
故老子曰： 知其荣，守其辱，为天下谷。 
Therefore, Laozi said: Even though one knows what honor is, he settles for humility and humiliation and is willing to stay in a low position in the world.