What are the famous aphorisms about regretting not studying hard at the beginning?

1, Guo Songmao Qian's poem "Long Songs in Yuefu": Young people who don't work hard are sad.

Interpretation: It is useless to study if you don't work hard when you are young and strong.

2, Song "Writing Huai": Don't stay idle, white boy's head, empty and sad.

Interpretation: Don't waste your time, your hair is gray, and you only regret it alone.

3. Tao Jin Yuanming's Miscellaneous Poems: It is difficult to get up in the morning if you don't return to your prime. It's time for people to encourage themselves when they reach middle age. Time goes by and waits for no one.

Interpretation: Once youth has passed, it is impossible to come back and never see the next day. We should encourage ourselves in our prime. Time goes by and waits for no one.

4, Tang Yan's true feelings, "Poetry of Persuasion": The night light is five chickens, which is the time for men to study. Teenagers only know how to play, but don't know how to study hard. When they are old, they regret why they didn't know how to study hard when they were young.

Interpretation: Every midnight is the best time for boys to study. When they are young, they should know how to study hard and study hard. But if you only play and don't study hard, you will regret why you didn't study hard when you were young.

5. Qing? Zhou's "Augmented Sage": When books are used, they hate less.

Interpretation: I regret that I have too little knowledge when I really use it.