夜晚是一首伟大的交响乐，但星星是它的音符。

"The best time to plant a tree was 20 years ago. The second best time is now."

数学是一种超越文化和语言障碍的通用语言。

If you want to be a leader, you have to be willing to make unpopular decisions.

我只是想传播正能量。