《吕氏春秋·览·审分览》
所以，治理天下的关键在于除掉奸邪，除掉奸邪的关键在于治理官吏，治理官吏的关键在于研习道术，研习道术的关键在于懂得天性。
故治天下之要，存乎除奸；除奸之要，存乎治官；治官之要，存乎治道；治道之要，存乎知性命。
Therefore, the key to governing the world lies in getting rid of traitors. The key to getting rid of traitors lies in governing officials. The key to governing officials lies in studying Taoism. The key to studying Taoism lies in understanding one's nature.