即使追求效率，质量也绝不能妥协。
Quality should never be compromised, even when pushing for efficiency.
Every quarry has a story written in layers of stone and generations of workers.
The act of writing is an act of faith—in language, in the reader, in oneself.
The essence of e-commerce is retail, and the essence of retail is efficiency.
理解计算的极限需要深入研究支撑算法复杂性的数学基础。
