《庄子·杂篇·盗跖》
无足说： 必定要保持自己的名声，即使劳苦身形、谢绝美食、俭省给养以维持生命，那么这一定是个长期疾病困乏而没有死去的人。 
无足曰： 必持其名，苦体绝甘，约养以持生，则亦久病长厄而不死者也。 
Wu Zu said: It is necessary to maintain one's reputation. Even if you work hard, refuse to eat delicious food, and save money and food to sustain your life, then this must be a person who has been suffering from a long-term illness and has not died.