The sentence in Chapter 12 of the Analects that indicates the need to cherish time is: Confucius said on the river: "The deceased is like a man who does not give up day and night."

From "The Analects of Confucius" by Confucius's disciples in the Spring and Autumn Period ·Zihan".

Translation: Confucius stood by the river and said: "The passing time is like this river, flowing day and night."

This is also the saying in "The Analects of Confucius" saying. Facing the surging river, Confucius lamented that time cannot wait for us. The flowing water never comes back, it never stops day or night. Looking at the water, we can understand the way of life. Although the past has passed, we should always maintain the spirit of self-improvement and never slack off.

Classic story

From ancient times to the present, many people have studied hard, been masters of time, and finally achieved some success.

Kuang Heng, the prime minister of the Western Han Dynasty, had no means to go to school because his family was poor. During the day, he worked for a family with a large collection of books. At night, he had no money to buy lamp oil, so he had to cut a hole in the earthen wall and borrow the lamp next door. I used the light to read, and even went to people's homes where there were books to work for free in exchange for books. He studied hard and finally became the prince's young master during the reign of Emperor Yuan of Han Dynasty. This is the story of cutting through walls and stealing light.

Che Yin of the Jin Dynasty was studious and liked reading very much since he was a child. However, because of his poor family, he did not have extra money to buy lamp oil for him to study at night. For this reason, he could only use his time during the day to recite poetry. But he felt that it was a pity that time passed in vain during the long night, so on summer nights, he caught dozens of fireflies and put them in his white silk pockets, and immersed himself in reading with the faint light emitted by the fireflies in the white silk pockets.

Because of his diligent study and practice, he finally became a high-ranking official. Sun Kang of the same dynasty also felt that it was a pity that time was wasted because he could not read at night, so he read tirelessly on winter nights, regardless of the cold, with the help of the snow light reflected on the vast land. This spirit of hard study promoted his knowledge to advance by leaps and bounds, and he became a well-educated man. Later, he also became a high official. This is the story of Nao Ying Ying Xue.

The protagonists of the above stories all deeply felt the preciousness of time. They took advantage of every possible opportunity, created conditions, studied hard, and finally achieved a career and became a model for future generations to learn from.