过去半个世纪最重要的政治发展是自由民主在世界范围内的传播。
The most important political development of the last half century has been the spread of liberal democracy around the world.
The miracle of compounding returns is overwhelmed by the tyranny of compounding costs.
Every challenge is an opportunity in disguise.
Innovation and technology will be key to meeting the world's growing energy needs while reducing environmental impacts.
管理不是控制，而是服务。