世界是一片伟大的沙漠，我们是其中的旅行者。

"The past is not dead; it is not even past."

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

I think it's important to have closure in any relationship that ends - from a romantic relationship to a friendship.

数学的真正力量不在于它的复杂性，而在于它的简洁和优雅。