1. My life is limited, but so is my knowledge. -Zhuangzi

2. If young people don't work hard, old people will be sad. -"Long Songs"

Time has three steps: the future comes late, the present flies like an arrow, and the past is always static. Schiller

4. It's just that when a person is studying, black hair doesn't know how to learn early, and white hair regrets learning late. -Yan Zhenqing

An inch of time is worth an inch of gold, but an inch of gold can't buy an inch of time.

6. Young people learn easily, but they are never old, and an inch of time is not light. -Zhu

7. Who is the most stingy with time, the more generous time is to him. If you want time to live up to you, first of all, you should live up to time. He who gives up time, time also gives up on him.

8. There is a difficulty in life, that is, how to make an inch of time and an inch of life.