每一个数学问题都是一个等待解决的谜题,每一个解决方案都是迈向更深入理解的一步。
The first lesson of economics is scarcity: There is never enough of anything to satisfy all those who want it. The first lesson of politics is to disregard the first lesson of economics.
无论头上是怎样的天空,我准备承受任何风暴。
生命诚可贵,道义价更高,“舍身取义”传唱千年,为了国家和民族,为了道义,无数仁人志士抛头颅酒热血,九死不悔。
我们必须衡量重要的东西 - 不仅是财务回报,还包括社会和环境影响。