The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when it be obeyed.

预测未来的最好方式就是创造未来。

我们必须在经济增长和环境责任之间取得平衡，它们并不相互排斥。

在数学中，旅程和目的地同样重要，因为正是通过发现的过程，我们才能真正学习。

In mathematics, the journey is as important as the destination.

经济学中最重要的思想是简单的，但它们的影响是深远的。