The essence of computational complexity is to understand the limits of what can be computed efficiently.

Music has made me understand that dreams are worth persisting.

世界是我自身的镜子，而我是世界的镜子。

You are not the opinion of somebody who doesn't know you.

Boys, you must strive to find your own voice. Because the longer you wait to begin, the less likely you are to find it at all. Thoreau said, "Most men lead lives of quiet desperation." Don't be resigned to that. Break out.

Hope is a good thing, maybe the best of things, and no good thing ever dies.