自由民主在世界范围内的传播并非不可避免，但考虑到其他选择，它是最有可能的结果。
The spread of liberal democracy around the world is not inevitable, but it is the most likely outcome given the alternatives.
"We are all our own graveyards I believe; we squat amongst the tombs of the people we were."
只要能够改变你自己的头脑，你就可以永远保持年轻。
The mining industry is cyclical, but great companies are built by those who can navigate the downturns as well as the booms.
In the field of diplomacy, there are no absolute victories, only relative victories.
Investing in cleaner coal technologies is an investment in our future.
大自然是最好的老师；它已经做了实验，我们只需要解读它们。