政治像战争一样刺激，一样危险。在战争中，你只会被干掉一次。而在政治中，可以很多次。 The United States is like giant boiler. Once the fire is lighted
Politics is almost as exciting as war, and quite as dangerous. In war you can only be killed once, but in politics many times.
"The study of computational complexity teaches us that some problems are inherently difficult, no matter how clever our algorithms are."
我写歌的时候，常常忘记时间。
数学的本质在于它的自由。