1. Good medicine is bitter in the mouth and good for the disease, and honest advice is bad for the ears and good for the action.

For the language, see "Confucius Family Language". This wise saying means that most good medicines have a bitter taste, but they are good for curing diseases; most of the words that teach people to be kind are not pleasant to the ear, but they are good for people to correct their shortcomings. This wise sentence is intended to educate people to be brave enough to accept criticism. It is now often used to explain that we should treat other people's opinions and criticisms correctly.

2. You should listen patiently to the opinions of others and seriously consider whether the person who accuses you is justified. If he is right, correct your mistake. If he is wrong, just pretend you didn't hear it. ——Leonardo Da Vinci

3. Accept criticism and do not make the same mistake twice. ——Management training expert Yu Shiwei

4. Frankness is the most brilliant gem of criticism. ——British Jewish politician Disraeli

5. It is rare to be a critic who dares to criticize in person. ——Chen Yi

6. Hearing both will lead to enlightenment, believing only half will lead to darkness.

Meaning: Only by listening to multiple opinions can you distinguish right from wrong; only by listening to one-sided opinions can you not be able to distinguish right from wrong. Source: "Qian Fu Lun·Light and Dark" by Wang Fu of the Han Dynasty: "The reason why the king is wise is to listen to both; the reason why the king is dark is to believe." The reason why the king is wise is because he listens to opinions from many sides. The reason for being stupid is because you believe the villain's words.

7. Follow what is good.

Congshanruliu, follow: obey; shan: good, correct; Ruliu: like flowing water, a metaphor for speed. It describes listening to correct opinions and accepting well-intentioned advice as quickly and naturally as flowing water. Source: Zuo Qiuming's "Zuo Zhuan: The Eighth Year of Chenggong": "The gentleman said: It is appropriate to follow what is good like a stream." Translation: A gentleman said: It is a good thing to follow what is good like a stream.