教育是你可以用来改变世界的最有力武器。
"Education is the most powerful weapon which you can use to change the world."
Sometimes we stare so long at a door that is closing that we see too late the one that is open.
预测未来的最好方法就是创造未来。
最优秀的矿业领导者是那些在别人只看到风险时能看到机遇的人。