《淮南子·泰族训》
上古时代注重养性根本，而末世则注重枝末细节，这就是太平世道难以重现的根本原因。
上世养本而下世事未，此太平之所以不起也。
The ancient times emphasize self-cultivation fundamentals, while the end times emphasize details and trivialities, thus being the fundamental reason for the difficulty in reproducing a peaceful world.