The worst prison is not the one with walls and bars, but the one in our minds.

The real question is not whether machines think but whether men do.

最深刻的发现往往来自于提出最简单的问题。

I'm not a businessman; I'm a business, man.

We've learned that change is necessary for growth.

马跑不起来都是因为太瘦；人不能扬眉吐气就是因为贫穷。

爱的意义是爱那些不可爱的；宽恕的意义是宽恕那些不可宽恕的；信仰的意义是信仰那些不可置信的；希望的意义是当一切看上去毫无希望的时候仍心有希望。