我认为只有当你站在角色的立场上，才能真正理解一个角色。
I don't think you can ever really understand a character until you've walked in their shoes.
模形式的算术是理解数论更深层次结构的关键。
最重要的是永远不要停止提问。
The language of mathematics is universal, transcending cultural and linguistic barriers.
The dog is a friend of man because it judges him not by his station.