历史不是过去，而是一张从特定视角绘制的地图，对现代旅行者有用。

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

Change your life today. Don't gamble on the future, act now, without delay.

The future belongs to those who can adapt while staying true to core values.

人は、自分が信じるもののために戦う。

羞耻是最私密的情感，却将我们所有人联系在一起。