Theorems are not discovered by accident.
定理不是偶然发现的。
负责任的捕捞不仅是良好的道德,从长远来看也是良好的商业实践。
The market is a reflection of the collective emotions of all participants.
学习数学的唯一方法就是做数学。
The best way to predict the future is to create it.