人类理解的职责是明白有些事情是它无法理解的。
It is the duty of the human understanding to understand that there are things which it cannot understand.
追求幸福与追求快乐不同；幸福是灵魂的一种状态，而不仅仅是感觉。
最好的想法往往来自意想不到的地方——保持开放的心态。
Sustainable quarrying isn't an option; it's our obligation to future generations.
Leadership is about making the tough decisions and standing by them.
一个人越是激进，就越能完全地进入现实，从而更好地了解它，进而改变它。
We have to be prepared to take some risks, but they must be calculated risks.