知常容，容乃公，公乃王，王乃天，天乃道，道乃久，殁身不殆。
《老子》第16章
Only by knowing the eternal can one embrace all ;only by embracing all can one be impartial ;being impartial ,you can be kingly ;being kingly, you can be one with Nature; being one with Nature is in accord with the Tao ; being in accord with the Tao is everlasting，and you can be free from danger throughout your life.
[注释]
容:包容。包容一切，包括生死、强弱、荣辱等。公:公正，正确。王(wang); 称王，这里指治理国家的原则。天:指天道，自然规律。殁(mo): 死。殆(dai); 危险。
[译文]
懂得了这个永远不变的道理就能包容一切，能够包容-切就能够公正对待一切。能够公正对待一切就能懂得治国的原则，懂得了治国的原则，进而就能了解自然规律。了解了自然规律，进而就能掌握道。掌握了道，就能长久生存，终身不会遇到危险。