在没有其他信息的情况下，参数的最佳估计是其样本值。

At the end of the day it's not about what you have or even what you've accomplished... it's about who you've lifted up, who you've made better. It's about what you've given back.

我不是一个品牌，我是一个人。

All happiness depends on courage and work.

成功不仅仅是获胜，而是永不放弃。