我认为只要不伤害别人，你应该可以做任何你想做的事。
I think you should be able to do whatever you want as long as you're not hurting anybody.
A life without contradictions is not a life worth writing about.
Combinatorics is like the art of counting without actually counting.
宇宙不仅比我们想象的更奇怪，它比我们能想象的还要奇怪。
The best reader is the writer who reads his own work.
The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.
经济学是对人类日常生活事务的研究。