思维的功能是指导行动。

We have to be careful not to become stylists.

"The unsaid is often the most powerful."

线性经济是一个从根本上就有缺陷的系统。它是一个获取、制造和浪费的系统。

你知道的越多，就越明白自己知道的很少。

The concept of polynomial-time reduction is central to understanding the structure of NP-complete problems.