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.
把守外海不如把守海口，把守海口不如把守内海。
The chief prevention against getting old is to remain astonished.
This is what we call love. When you are loved, you can do anything in creation. When you are loved, there's no need at all to understand what's happening, because everything happens within you.
