《韩非子·难三》
有人说：大庭广众和严肃场合，大家都会表现得很肃敬；私室独居，即便曾参、史麃也会轻慢随便。
或曰：广廷严居，众人之所肃也；宴室独处，曾、史之所僈也。
Some people say: In the public and serious occasions, everyone will behave very respectfully; in the private room alone, even Zeng Shen and Shi Po would be frivolous and casual.