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.
Hard work beats talent when talent doesn't work hard.
大自然从来都不是完全对称的，我们的方法也不应该假装它是。
Focus on progress, not perfection.
预测未来的最好方法就是创造未来。
