我们的目标是组织世界上的信息，使其普遍可访问和有用。

Home is the place where, when you have to go there, they have to take you in.

The causal approach is about understanding the mechanisms that generate the data.

The less secure a man is, the more likely he is to have extreme prejudice.

生活是世界上最罕见的事情。大多数人只是存在，仅此而已。