"The best leaders are those who develop other leaders."
今天我们播下的每一颗种子都是对后代的承诺。
Our sweetest songs are those that tell of saddest thought.
什么人背后不被人说，又有谁在别人面前不去议论人呢？
Economics is ultimately about improving human welfare.
位置测量越精确，动量测量就越不精确，反之亦然。