"In computer science, we are always trying to find the balance between expressiveness and tractability."

We must build a world in which there shall be no economic domination, no exploitation, no unemployment, and no war.

The only thing that can make you strong is your own will.

挑战是伪装的机遇；拥抱它们，变得更强大。

I am not young enough to know everything.

文学的价值不在于它的流行程度，而在于它能否触动读者的内心。