The lights are on at three o'clock and the chicken is on at five o'clock. It's when men are studying. Black-haired people don't know how to study early, and white-haired people regret studying late. －－－－Yan Zhenqing

It is easy for a young person to learn but hard for an old person to succeed. One inch of time should not be taken lightly. －－－－Zhu Xi

My life has a limit, but my knowledge also has no limit. －－－－Zhuangzi

If a young man does not work hard, an old man will be miserable. - "Long Song Xing"

There are three paces of time: the future arrives belatedly, the present flies like an arrow, and the past stands still forever. ——Schiller

Whoever is stingiest with time will be more generous to him. If you want time to live up to you, you must first live up to time. He who gives up time, time also gives up on him. There is a difficult problem in life, that is, how to make one inch of time equal to one inch of life.

Time is life, time is speed, and time is power. －－－Guo Moruo

The most serious waste is the waste of time. ---- Buffon

Time is given twenty-four hours a day, but one day brings wisdom and strength to the diligent, leaving only regret to the lazy. --- Lu Xun

The fastest and slowest, the longest and shortest, the most ordinary and precious, the most easily overlooked and the most regrettable thing in the world is time. --- Gorky

Time is life, and wasting other people's time for no reason is actually tantamount to seeking wealth and killing.

---Lu Xun