《管子·重令》
天道的规律和人心的变化就是这样的：就天道的规律说，事物发展到尽头则走向反面，发展到极盛则走向衰落；就人心的变化说，富有了，则产生骄傲，骄傲则松懈怠惰。
天道之数，人心之变。天道之数，至则反，盛则衰。人心之变，有余则骄，骄则缓怠。
The law of heaven and the changes of the human heart are like this: according to the law of heaven, when things develop to the end, they will go to the opposite side. When they develop to the extreme, they will decline. As for the changes of the human heart, once they are rich, they will be proud, and pride will lead to slackness and laziness.