经济史和经济发展的核心问题是解释政治和经济制度的演变，这些制度创造了一个诱导生产率提高的经济环境。

The real giants have been those who have stood for something, who have had a clear idea of what they wanted to say and have said it with force and clarity.

The test of our progress is not whether we add more to the abundance of those who have much; it is whether we provide enough for those who have too little.

I'm not a role model... I'm just a guy who plays basketball.

最坚固的容器不仅由钢铁制成，更由远见和团队合作打造。