1． There are many people who pay the price of success with the happiness of youth. ——Mozart

2. Optimistic people stay young forever. ——Byron

3. Can I seek a life of lowliness and decline in my prime of life? Can I turn my goals to pleasure and fame as I approach old age? ——Jinner

4. Youth is a raw material that must be shaped sooner or later. ——Shakespeare

5. Some people say that youth is the time of criticism, and this statement is not an exaggeration. This kind of criticism is characterized by high enthusiasm and strong principle. ——Suhomlinsky

6. With the balanced rhythm of light and darkness, and the rhythm of children's lives, the endless, unpredictable and profound years appear. ——Romain Rolland

7. If the vitality of youth has disappeared and the curiosity to advance has faded, life will be meaningless. ——Mueller

8. My gray hair makes me old! Youth is no longer in Ru Zhihu? When you are young and weak, you are no longer a boy. If you cannot learn and become famous, how can you be a husband? ——Yu Liangbi

9. Youth is always beautiful, but true youth only belongs to those who strive for the top, those who always work selflessly, and those who are always humble. ——Lei Feng

10. Youth are the pillars of the journey. Youth are the guardians of the fruits of the journey and the force that accelerates history toward a better world.

——Song Qingling

(I don’t know what it means. I checked many books and couldn’t find it. You can ask your relatives and friends)