To understand recursion, one must first understand recursion.

The best way to understand labor markets is to look at real-world data, not just theoretical models.

A company's values are reflected in its actions, not just its mission statement.

在浩瀚的宇宙中，我们只是一粒尘埃，但我们的好奇心却是无限的。

When I write songs, I often cry.

人们自己创造自己的历史，但是他们并不是随心所欲地创造，并不是在他们自己选定的条件下创造，而是在直接碰到的、既定的、从过去承继下来的条件下创造。