If we kill off the wild, then we are killing a part of our souls.
每个人都有不为世人所知的秘密悲伤;我们常常称一个人冷漠,而实际上他只是悲伤。
我们这年代的人读书太多而不聪明,想得太多而不美丽。
The beauty of instrumental variables is that they allow us to see the world in a new light.