Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
通信的基本问题是在一点精确或近似地复现另一点选择的信息。
如果自己道德高尚,就不会被外界不正的东西所迷惑。
成功不在于成为最大,而在于产生最大的影响。
Labor economics is fundamentally about understanding people’s choices and constraints.