Your brain is your most important asset; take care of it.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
数学不是关于数字、方程、计算或算法的：它是关于理解的。
Game theory is not about winning; it's about understanding the rules of the game so that you can change them.
Every mathematical theorem is a story waiting to be told, a mystery waiting to be unraveled.
逻辑学研究不仅仅是关于形式系统，更是关于人类推理的本质。