1. Iron becomes harder as it is refined. ——Gorky

2. Only pain can bring joy. ——Beethoven

3. Suffering is the teacher of life. ——Balzac

4. You are not afraid of difficulties, difficulties are afraid of you. ——Britain

5. Through suffering, move towards joy. ——Beethoven

6. Those who have always governed a country would rather not forget the fishermen and woodcutter. ——Xie Zhen

7. Stone can be sharpened to turn dullness into sharpness. ——Liu Yuxi

8. Difficulty is a severe mentor. ——Baker

9. I want to seize fate by the throat. ——Beethoven

10. Disaster itself is a good medicine. ——Copper

11. Difficulties are extremely serious teachers. ——Burke

12. Perseverance is the shortcut to reaching your destination. ——Anonymous

13. The husband is precious and unyielding, so success or failure does not matter. ——Lu You

14. Nothing is difficult in the world, as long as you are willing to climb.

15. A stone without a feather is not afraid of danger and hardship. ——Li Bai

16. Suffering is hard, how can we understand the past and present without suffering? ——Cao Duan

17. The fearless spirit can take refuge here. ——Plautus

18. If you don’t advance in academic knowledge, you will retreat. ——Zuo Zongtang

19. Worry and labor can rejuvenate a country, but leisure can destroy one's life. ——Ouyang Xiu

20. Everything tastes bitter before it matures. ——Cyrus

21. Suffering is a stepping stone for genius. ——Balzac

22. Everything is difficult at the beginning, as is the case with every science. ——Marx

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

24. Warriors move forward on a road full of thorns. ——Ovid

25. There will be no great cause without great difficulties. ——Voltaire

26. How can plum blossoms smell so fragrant without a bone-chilling cold? ——Feng Menglong

27. The most knowledgeable and knowledgeable people are always cautious. ——Rousseau

28. There must be a sad history in the successful history of any career. ——Zou Taofen

29. Setbacks and hardships are good opportunities to exercise your will and increase your ability. ——Zou Taofen

30. A sharp knife will become rusty if it is not sharpened, and a sharp back will be hunched if the chest is not straight. ——Wen Yiduo