每个数学问题都有一个解决方案；只是需要时间和创造力来找到它。
Every mathematical problem has a solution; it just takes time and creativity to find it.
The purpose of statistical methods is to provide a rational basis for drawing conclusions from data.
统计方法的目的是为从数据中得出结论提供合理的基础。
政策规则优于自由裁量，因为它们避免了时间不一致性问题。
警惕物质诱惑，保持内心独立。