"We are all haunted by the ghosts of our choices."

The boundary between inside and outside is not a line, but a gradient.

A good editor knows when to cut and when to hold.

In the end, we will remember not the words of our enemies, but the silence of our friends.

表示论提供了表达许多数论现象的语言。

在股票中赚钱的关键是不要被吓跑。