Life and time are world's two teachers. Life teaches us to make good use of time, while time teaches us the value of life.

Life and time are world's two teachers. Life teaches us to make good use of time, while time teaches us the value of life.

生命和时间是世界的两位老师。生活教会我们如何善用时间，而时间教会我们生命的价值。

-- Unknown 佚名