最大的风险是不冒任何风险。在一个快速变化的世界里，唯一注定要失败的策略就是不冒风险。
The biggest risk is not taking any risk. In a world that is changing quickly, the only strategy that is guaranteed to fail is not taking risks.
可持续发展要求我们在经济增长和环境保护之间取得平衡。
The best way to learn about poverty is to go out and talk to the poor themselves.
理论地理学是科学的女王，因为它独力处理事物在空间中的排列。
The universe is not queerer than we suppose, but queerer than we can suppose.