《庄子·外篇·山木》
孔子说： 饥饿、干渴、严寒、酷暑，穷困的束缚使人事事不能通达，这是天地的运行，万物的变迁，说的是要随着天地、万物一块儿变化流逝。
仲尼曰： 饥渴寒暑，穷桎不行，天地之行也，运物之泄也，言与之偕逝之谓也。
Confucius said, “Hunger, thirst, cold, and heat, setbacks that fetter people in all things—these are the workings of heaven and earth, the transformations of all things, which means changing and flowing with heaven and earth and all things.”