Time erodes all such beauty, but what it cannot diminish… is the wonderful workings of your mind. Your humor, your kindness… and your moral courage.
领导力不在于头衔、职位或流程图，而在于一个生命对另一个生命的影响。
You have to believe in yourself when no one else does.
Our approach is to observe carefully before acting.
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。