《庄子·杂篇·渔父》
他不懂得待在阴暗的地方就能使影子消失掉，处在静止状态就能使足迹不出现，他也太过愚蠢了。
不知处阴以休影，处静以息迹，愚亦甚矣！
He didn’t know that staying in the shade would make his shadow disappear, that keeping still would make his footprints disappear, he was too stupid.