Your heart knows the way, follow it.

A problem is in P if it can be solved quickly by a computer, and in NP if a solution can be verified quickly.

我不喜欢沉默，我喜欢大声表达。

You don't write because you want to say something, you write because you have something to say.

外交需要持久的耐心和坚定的决心，以推动复杂问题的解决。