The presence of those seeking the truth is infinitely to be preferred to the presence of those who think they've found it.

我们成为了我们所想的一切。

我们只在童年时看过一次世界。其余都是记忆。

If a Nation expects to be ignorant and free in a state of civilization,it expects what never was and never will be....If we are to guard against ignorance and remain free,it is the responsibility of every American to be informed."

采石业必须与技术一起发展，否则就有落后的风险。

最重要的是保持适应能力。