学习数学的最好方法就是去做数学。

"Literature is the art of discovering something extraordinary about ordinary people, and saying with ordinary words something extraordinary."

"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."

译文：亲近贤臣，疏远小人，这是西汉兴盛的原因;亲近小人，疏远贤臣，这是东汉衰败的原因。