1. Pain often makes the weak weary of the world and commit suicide, but it makes the strong more sober and energetic. ——Anonymous

2. When the sky is strong, a gentleman strives to constantly strive for self-improvement; when the terrain is weak, a gentleman carries his virtues. ——"The Book of Changes"

3. If there is a will, things will come true. A hundred and two Qin passes will eventually belong to Chu. The painstaking efforts of man and nature will not be wasted. Three thousand Yue Jia can swallow Wu. ——Pu Songling

4. Without wind and rain, it cannot grow into a big tree; without being tempered, it is difficult to become steel. ——Lei Feng

5. The glory of life lies not in never giving up, but in being able to rise again and again. ——Napoleon

6. My highest principle is: never give in regardless of any difficulties. ——Marie Curie

7. Difficulties are like springs. It depends on whether you are strong or not. If you are strong, it will be weak. If you are weak, it will be strong. ——Anonymous

8. Difficulties are the teachers of life and the best school. ——Anonymous

9. Self-esteem and self-love are a driving force for striving for perfection, but they are also the source of all great undertakings. ——[Russia] Turgenev

10. Believe in yourself first, and then others will believe in you. ——Romain Rolland?

11. Those who accomplished great things in ancient times not only had extraordinary talents, but also had perseverance. ——Su Shi?

12. If there is something that needs to be done tomorrow, it is best to start it now. ——Franklin?

13. The prime years will never come back again, and it is difficult to come back to the morning again. It is appropriate to encourage yourself in time, and time waits for no one. ——Tao Qian?

14. After some setbacks, you gain some insights. ——Shen Hanguang?

15. Despite all defeats, one never loses his ambition.

——Su Che?