Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。
失败只是另一种学习方式。
The study of computational complexity is a journey through the landscape of mathematical logic and algorithmic theory.
Every point is important, and you have to fight for every one.
All businesses need to be young forever. If your customer base ages with you， you're Woolworth's.