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。
The world is a story waiting to be written.
People who treat other people as less than human must not be surprised when the bread they have cast on the waters comes floating back to them, poisoned.
Have an aim in life，or your energies will all be wasted.
