The meaning of "light is silent, but heavy is faithless". A person who makes a promise easily rarely keeps it. There is no way for a person who breaks his word to gain a foothold in society. If a person can keep his promise in any small matter, he will certainly build a great reputation.

This sentence itself is a combination of three allusions. "Make a promise lightly, but don't break it" comes from the original words in Laozi: "It is precisely because saints are not big in the end that they can become big. It is easy and difficult for a husband who promises lightly to break his promise. It is still difficult to be a saint, so it is not difficult in the end. "

"Break your word" comes from Zuo Zhuan's Twenty-two Years of "xianggong": "Yan Ping said in Qi Hou that the meeting of businessmen was ordered by Jin. Can the Luan family use it today? Small things are big, and faith is also important. If you break your promise, you can do it. Listen. "

"Small letter leads to big letter" comes from the top left of Han Feizi's theory of foreign storage: "Small letter leads to big letter, so we know that the Lord accumulates in letter. If you don't believe in rewards and punishments, the ban won't work. "