2. Running water will only release its vitality when it encounters conflict. -Goethe
3, fire sees real gold, adversity makes heroes. Seneca
No intelligent person will deny the exercise value of pain and sadness. -Huxley
5. Pain is a great teacher of mankind. The soul becomes stronger and stronger under the painful breath. -Ye Xin Bach.
6. Difficulties and torture are a hammer that hits the blank for people. What should be knocked out is fragile iron filings, forged into sharp steel. -Chekhov
7. If a person is afraid of pain, disease, unexpected events, danger of life and death, he can't stand anything. -Rousseau
8. People have to suffer fewer setbacks in life to understand the full value of a larger part. -Bulvi
9. All happiness is not without troubles, and all adversity is not without hope. bacon
10, even if you fall a hundred times, you should stand up a hundred times. -Zhang Haidi