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

You don't love because: you love despite; not for the virtues, but despite the faults.

但老人此时想到的只是掌舵和他自己极度的疲乏。他出海太远了，那些鲨鱼把他打败了。他知道那些鲨鱼除了大马林鱼的空骨架之外，是什么也不会给他留下的。

I prefer to supervise the whole operations of the government myself rather than entrust the public business to subordinates, and this makes my duties very great.

在文学中，边界消失了；剩下的只有人类情感的普世语言。