The most precious thing is today, and the easiest thing to lose is today.

Wasting other people's time is murder for money, and wasting your own time is chronic suicide.

Do you love life? Then don't waste time, because time is the material of life.

When will all the rivers go to the East China Sea and return to the west? If a person doesn't work hard when he is young, he will regret when he is old ―― laziness when he is young will make him regret when he is old; Reckless youth makes regretful old age; Idle youth, poor old age

One dollar a day, ten dollars a day. The rope saws wood, but water drops stones.

Study for the Rise of China.