强大的头脑讨论思想，普通的头脑讨论事件，弱小的头脑讨论人。

你可以锁上你的图书馆；但对我的思想自由，你无法设置任何门闩、锁或插销。

最好的营销策略是产品足够好，以至于它能自我营销。

你是自己故事的作者。

我总是努力推动自己做得更好。

You cannot hope to build a better world without improving the individuals. To that end, each of us must work for our own improvement and, at the same time, share a general responsibility for all humanity, our particular duty being to aid those to whom we think we can be most useful.

经济学的目标是理解如何以最高效的方式分配稀缺资源。

The success of any political system depends on its ability to generate legitimacy in the eyes of its citizens.