Coal is not just a commodity, it's a commitment to America's future.
Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.
我们都是自己制造的囚徒,被我们讲给自己的故事所困。
唯一真正的光是灵魂的光。
The only real journey is the one within.