《论衡·卷二十八·书解篇》
周文王忙于政务太阳偏西也没有空吃饭，周公洗一次头要中断三回来接待客人，还有什么空余时间悠闲自在地用笔在简札上写出美丽的文章呢？
文王日昃不暇食，周公一沐三握发，何暇优游为丽美之文於笔札？
King Wen of Zhou was so busy with government affairs that he had no time to eat even when the sun was setting, Duke of Zhou stopped washing his hair three times to receive guests, so how could they possibly have had the free time to leisurely write beautiful articles on bamboo slips?