《清稗类钞·敬信类》中记载了这样一个故事:一个叫蔡嶙的人向一位朋友借了一千两黄金,没有打借条。不多年,朋友去世后的一天,他把朋友的儿子请到家里,把一千两黄金还给他。朋友的儿子很惊愕,坚决不受,笑道:“没有这回事,父亲没有留给我借条,也没有口头告诉我有这事。”蔡嶙说:“借条就在我心里,不在纸上,心中的诚信才是根本。你父亲知道我是个讲诚信的人,才没有告诉你。他如此相信我,我又岂能失信呢?”最后还是把黄金还给了他。 The story of “clean barnyard class notes · deference class” recorded a story: a man named Cai Yong borrowed a thousand and two gold from a friend and did not borrow a note. A few years later, one day after his friend’s death, he invited his friend’s son to his home and returned him with 1,200 gold. Friends of the son was very shocked, determined not to, laughed: “No such thing, my father did not leave me to borrow, did not verbally tell me to have this. ” Cai said: “IOU in my heart, Not in the paper, the integrity of the heart is the fundamental.Your father knew I was a honest person, did not tell you that he believed me so, how can I lose it? ”Finally, the gold was returned to him.