能经常感到满足的人，上天不能使其沦落贫穷；能够做到不贪求的人，上天不能使其卑贱；能将躯体看作身外之物的人，上天不能使其患病；能够做到不贪恋生命的人，上天不能使其死亡；能够做到随遇而安的人，上天不能使其困顿；能积极奖掖后进、培养人才的人，上天不能使其孤立；能挺身而出，为天下所有人以及子孙后代造福请命的人，上天不会使其陷入绝境。

The concept of NP-completeness has provided a powerful tool for understanding the complexity of problems.

The moment you stop believing, you're already defeated.

In mathematics, the journey is just as important as the destination, for it is through the process of discovery that we truly learn.

Simplicity can be the most powerful thing.

做好了官，有余力就要学习，学习好了，有余力就去做官。