学习数学的最好方法就是做数学。
最好的电影是那些能让你感受到什么的电影。
The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt, and the profoundest wisdom to know when it ought to be resisted, and when it be obeyed.
The more we learn about the universe, the more we realize how much we have yet to discover.