一个常见的经验是，一个晚上难以解决的问题在睡眠委员会工作后，在早上得到了解决。

任何系统的能量最终都来源于太阳，并以某种形式返回到宇宙中。

The problem of modern society is it turns the whole world into a school. Everybody's wearing jeans, everybody's the same. And yet, they're not. So there's a spirit of equality combined with deep inequality, which can make for a very stressful situation.

The most important quality in a man is courage. Without it, the other qualities are worthless.

我并非天生失明，12岁时才失去视力。所以我见过这个世界，知道事物的模样。当我歌唱爱与痛苦、欢乐与悲伤时，我知道自己在唱什么。

采矿技术创新不是为了取代人，而是为了让他们的工作更安全、更高效。