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。
人生苦短，必须快乐。
真正的领导力在于为他人创造价值，而不仅仅是为自己。
The only limit to our realization of tomorrow will be our doubts of today.
The speech we hear is an indication of that which we don't hear. It is a necessary avoidance, a violent, sly, anguished or mocking smokescreen which keeps the other in its place.