《汉书·志·刑法志》
人的手和脚不足以供给嗜好和欲望，奔走不足以躲避侵害，没有毛皮与羽毛用来防御寒暑，所以人一定要役使万物来养活自己，使用智慧而不依靠武力，造就是人所以尊贵的原因。
爪牙不足以供耆欲，趋走不足以避利害，无毛羽以御寒暑，必将役物以为养，用仁智而不恃力，此其所以为贵也。
Human hands and feet are insufficient to satisfy desires and cravings, and running away is insufficient to avoid harm. Humans do not have fur or feathers to protect themselves from heat and cold, so they must use all things to sustain themselves. Humans rely on wisdom instead of force, and this is why they are noble.