在数学中，最简单的问题往往导致最深刻的发现。
对于非礼的事，上等到的士人根本不想；对于非礼的事，中等的士人从来不说；对于非礼的事，下等的士人紧闭门户。
The best fruits come from patience, care, and respect for nature's timing.
The concept of computational complexity is not just about how fast we can compute, but also about understanding the limits of what can be computed.
The arithmetic of modular forms is a key to understanding the deeper mysteries of number theory.