《庄子·外篇·骈拇》
因此，脚趾骈生，不过多连结了一块无用的肉；手上长六指，不过多长了一个无用的指头；超出了五脏之情，走上仁义的歪门邪道，只不过是小聪明而已。
是故骈于足者，连无用之肉也；枝于手者，树无用之指也；多方骈枝于五藏之情者，淫僻于仁义之行，而多方于聪明之用也。
Thus, toes that grow together merely link useless flesh together, while six fingers on the hand merely add another finger that is useless. Going beyond the feelings of the five organs and pursuing the artificial path of benevolence and righteousness merely represents mere cleverness.