The biggest risk is not taking any risk. In a world that's changing quickly, the only strategy that is guaranteed to fail is not taking risks.
The only limits you have are the limits you believe.
诗歌这种艺术形式,能在简短的语句中蕴含无尽的意蕴。
Perhaps as important is the relation between the existence of solutions to a competitive equilibrium and the problems of normative or welfare economics.
最有效的政策往往是最简单的。