古人云“人而无信,不知其可”,历史上更有“大丈夫一言既出,驷马难追”的古训。信用作为道德层面的一种操守,表现为公众对社会规则或人群之间约定规则的自觉遵循。纵观古今,社会评价体系都极其注重信用的培育,将信用视为社会秩序得以维持的基本前提。中国正在致力于建设社会主义市场经济,而信 The ancients cloud “people without information, I do not know their own”, historically there is “a man out of a word outrageous, stupid horse hard to catch” the ancient saying. As an ethical morality, credit is manifested in the public's voluntary compliance with social rules or rules of agreement between people. Throughout ancient and modern times, the social evaluation system places great emphasis on the cultivation of credit and regards credit as the basic prerequisite for maintaining social order. China is committed to building a socialist market economy, and the letter