《颜氏家训·治家篇》
有的人把书籍胡乱堆放在桌上，以致书卷分散，很多被小孩婢妾弄脏，或被风雨虫鼠毁伤，这真是有损道德。
或有狼藉几案，分散部帙，多为童幼婢妾之所点污。风雨虫鼠之所毁伤，实为累德。
Some people pile books on the table in a mess, so that the scrolls are scattered, many are soiled by children and maids, or damaged by wind, rain, insects and rats. This is really a violation of morality.