1. Tribulation and hardship are the highest institutions of learning for tempering one’s character.

2. The gods retain for themselves the knowledge of the most important things.

3. Pride is the product of ignorance.

4. I know very clearly that I have no wisdom, no matter how big or small.

5. The most promising winners are not those with outstanding talents, but those who are best at exploiting every opportunity.

6. The most effective educational method is not to tell people the answers, but to ask them questions.

7. Beauty does not last forever.

8. Ignorance is sin.

9. Go deep into your heart and know yourself!

10. Education is not indoctrination, but igniting a flame.

11. A life of chaos is not worth living.

12. Assuming that virtue is knowledge, there is no doubt that virtue comes from education.

13. Reasonable education and training can bring benefits, while losing reason will bring harm.

14. The fields and trees did not teach me anything, but the people in the city taught me a lot.

15. At the door of death, what we have to consider is not the emptiness of life, but its importance.

16. A thoughtful person is the measure of all things.

17. There are two kinds of people in this world, one is a happy pig, and the other is a painful person.

18. I walk around and do nothing else. I just ask you, young and old, not to just care about your body, but to protect your soul.

19. If you want to learn knowledge from me, you must first have a strong desire for knowledge, just like you have a strong desire to survive.

20. For philosophers, death is the final self-realization. It is a desirable thing because it opens the door to true knowledge.