Life lessons will be presented to you in the order they are needed. Everything you need to master the lesson is within you. Once you have truly learned a lesson， you will be presented with the next one. If you are alive， that means you still have lessons to learn.

时间是你最宝贵的资产，不要浪费在无关紧要的事情上。

"The past is always tense, the future perfect."

文学是社会的镜子，反映其美德和恶习。