《淮南子·齐俗训》
而根据时世的变化而制定的礼法，再用于变化了的时世，就很难做到恰当适宜；如不变化礼法，就会像冬天穿葛布衣、夏天穿皮大衣一样可笑。
夫以一世之变，欲以耦化应时，譬犹冬被葛而夏被裘。
Rituals established according to the changes of the times are hardly appropriate when applied to changed times; if the rituals are not changed, it will be as ridiculous as wearing葛布 clothes in winter or fur coats in summer.