《庄子·杂篇·盗跖》
古时候人们不知道穿衣，夏天多多存积柴草，冬天就烧火取暖，所以称他们叫做懂得生存的人。
古者民不知衣服，夏多积薪，冬则炀之，故命之曰 知生之民 。
In ancient times, people did not know how to get dress, stored firewood in summer, and used fire to keep warm in winter, so they were called the people who knew how to survive.