Let the world change you, and you can change the world.
让世界改变你，然后你改变世界。
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 string is a stark data structure and everywhere it is passed there is much duplication of process. It is a perfect vehicle for hiding information.