数学不仅仅是关于数字、方程、计算或算法:它是关于理解的。
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.
尽管困难,但约束自己去做你知道是正确和重要的事情,是通往自豪、自尊和个人满足的大道。
Every generation needs a new revolution.