Cherish the time
Time is lacking beginning and end, and each person's life is limited, a person's time is limited. If a person's life has come to an end, so he has the time will soon come to an end.
In the universe of 1 000000000 universes, the greatest, the most fair, most selfless time living in the most common and most valuable or time. Spring summer autumn and winter, year after year. Poplar blight, green again when the flowers withered, but there is a time of blooming. However, the life of a person only once. " Flowers are re-opened, no-one juvenile ", time also is such, step by step, section by section, never stop, " the Yellow River water to the sky, back to the sea ", transient.
Therefore, we should cherish and your time. The ancients said, " the night lights even days, is the widespread study. Black do not know as early as hard, white the first study to regret later ", it is telling us : life is limited, must treat time as gold, do not take precious is time wasted, but while youth time to learn more knowledge, in their own the rest of one's life for a big catch. The ancients did so, do we not as good as the ancients?
珍惜时间
时间是无始无终的，而每个人的生命却是有限的，属于一个人的时间也是有限的．如果一个人的生命走到了尽头，那么他所拥有的时间也即将宣告结束。
大千世界中，最伟大、最公正、最无私的是时间生活中最平凡又最珍贵的还是时间。春夏秋冬，年复一年。杨树枯了，有再青的时候百花谢了，有再开的时候。然而，一个人的生命却只有一次。“花有重开日，人无再少年”，时间亦是如此，一步一步，一节一节，永不停留，如若“黄河之水天上来，奔流到海不复回”，稍纵即逝。
因此，我们应珍惜属与自己的时间。古人说的“三更灯火五更天，正是男儿读书时。黑发不知勤学早，白首方悔读书迟”，正是告戒我们：生命有限，必须惜时如金，切莫把宝贵是光阴虚掷，而要趁着青春的大好时光多学点知识，在自己的有生之年里争取赶一反大事业。古人尚且如此，难道我们还不如古人吗?