If you are not refined and sincere, you cannot move people. "Zhuangzi, Fish Father"

When making friends, keep your word. "The Analects of Confucius"

I have to examine myself three times every day: Are I being unfaithful to others? Make friends but don’t believe it? Not accustomed to it. "The Analects of Confucius"

Be true to your words and bear fruit in your deeds. "The Analects of Confucius"

A light promise will lead to a low faith. "Laozi"

A promise is worth a thousand pieces of gold. "Historical Records"

Sincerity is the way of heaven. Sincerity is the way of man. "Book of Rites"

Being sincere is the way of heaven; being sincere is the way of man. "Mencius"

Those who do not believe in their words will have no fruitful actions. "Mozi"

Two minds cannot win one person, and one mind cannot win a hundred people. "Huainanzi Miao Chengxun"

A proud king will have no loyal ministers, and a man of eloquence and wisdom will not be trusted. "Huainanzi Miao Chengxun"

Confucius said: People who have no faith do not know what they can do. A large cart has no hooks, and a small cart has no shafts. How can it move? "The Analects of Confucius: For Government"

Confucius taught four things: literature, conduct, loyalty, and trustworthiness. "The Analects of Confucius"

Those who are good at doubting others will also be doubted by others; those who are fond of guarding against others will also be guarded against. "Yu Li: He who allows himself to be trusted has limited skills"

You can start with me and you can end with me, you just have to believe it! "Chapter of Integrity"

A hundred kinds of hypocrisy are not as good as one truth. (I forgot the source of this...)

Gold and jade are not treasures, but loyalty is considered a treasure. "Book of Rites and Confucianism"

I have no deceit from you, and you have no danger from me. "Zuo Zhuan"

Whatever is contrary to you is also contrary to you. "Mencius King Hui of Liang"

Seeing his sincerity, gold and stone were opened to him. "Han Shi Wai Zhuan"

Those who make promises lightly will have few believers. "Saving Heart Record"

If you push it sincerely, you will believe it without saying it. "Wen Zhongzi"

Treat others with faith, and think of them if they don't believe; treat others with no faith, think of others if they don't believe. "Fu Zi Yi Xin"

That's all I can think of. . . The mobile code may have some incorrect punctuation, but the words should be correct