数学的语言是普遍的，超越了文化和语言的障碍。
The only purpose for which power can be rightfully exercised over any member of a civilized community， against his will， is to prevent harm to others.
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：它是关于理解的。
当权力稀缺时，一点点权力都充满诱惑。
The detective story is the normal recreation of noble minds.