知足常乐《蔡轩琐记》中有一《人心难足歌》：“终日奔波只为饥，才得食足又思衣。衣食若还多充足，洞房装冷使思妻。取得妻来鸳被暖，奈何送老恐无儿。有妻有儿双双乐，终日思量屋舍低。起得高楼并大厦，又无官职被人欺。县丞主薄皆嫌小，欲去朝中挂紫衣。人心似海何时满？奈 Contentment “Cai Xuan Suo Kee,” there is a “hard-hearted song”: “all day long run around only for the hungry, was enough food and clothing.” If enough food and clothing, bridal chamber cold so that his wife. Was warm, how to send to fear no children .Wife there are children both music, all day long to consider the low house .To get high-rise buildings and buildings, but also no official was bullied. County chief thinner are too small, want to go North Korea hanging clothes When people like the sea when?