From Liu Yuxi's (
刘禹锡) Tang-dynasty essay 《
陋室铭》 (Inscription for My Humble Room). Full couplet: 『
谈笑有鸿儒,
往来无白丁』— 'I chat and laugh with great scholars; no plain commoners pass through.' Liu wrote the essay to defend the dignity of his small, simple house, arguing that a room is ennobled by the company it keeps, not by its size or decoration.