一个测量可用的常识：手臂伸直两测指尖的距离就是你的身高。
Handy measure: the distance between your fingertips of your outstretched arms at shoulder level is your height.
The most important challenge facing the world today is the need to create strong, effective, and accountable states in the developing world.
教育的根是苦的，但果实是甜的。
Monsters are real, and ghosts are real too. They live inside us, and sometimes, they win.
决定性的十年：为什么你的二十岁很重要——以及如何充分利用它们。
预测是非常困难的，尤其是关于未来。
林业创新不是可选项，而是生存的必需。
"I work very slowly. It's a process of building up layers and adjusting until it feels right."