The concept of computational complexity is not just about how fast we can compute, but also about understanding the limits of what can be computed.
过去是一个陌生的国度；那里的人做事方式不同。
只有在梦想中，人才能真正自由，从来如此也将永远如此。
Don’t let the noise of others’ opinions drown out your own inner voice.
You have to be willing to sacrifice to get what you want or what you need.
"In the end, we will remember not the words of our enemies, but the silence of our friends."
