我不害怕跌倒，因为我知道我会重新站起来。

The true way is along a rope that is not spanned high in the air, but just above the ground. It seems intended more to cause stumbling than to be walked upon.

最好的投资是投资于自己的事业。

"Grief is a sort of madness, I think. It makes you do strange things."

计算复杂性的研究不仅仅是关于问题的分类；它是关于理解计算本身的本质。