1, the light is still on at midnight. That is, when a person is studying, he doesn't know whether he is diligent early or not, and he regrets late when he is white. -Yan Zhenqing 2. An inch of time is worth an inch of gold, and an inch of gold can't buy an inch of time. 3. It is difficult for a teenager to learn, but an inch of time is not light. -Zhu 4. My life is limited, but so is my knowledge. -Zhuangzi 5. If young people don't work hard, old people will be sad. -"Long Songs" 6. Time has three steps: the future comes late, the present flies like an arrow, and the past is always static. -Schiller 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. 9. Time is life, time is speed and time is power. -Guo Moruo 10, the most serious waste is the waste of time. -Buffon