相关性和因果关系之间的区别在实证工作中是根本性的。

So we beat on, boats against the current, borne back ceaselessly into the past.

"The world is full of stories, and every story is a world in itself."

The art of algorithm design is not just in solving problems, but in discovering new ways to think about them.

过去是一个异国他乡；他们在那里的行事方式不同。

创新不是重新发明轮子，而是让轮子更好、更强、更高效。