Innovation in coal mining isn't about reinventing the wheel, but about making the wheel more efficient and environmentally friendly.

活着就是留下痕迹，而诗歌是所有痕迹中最持久的

Those who deny freedom to others, deserve it not for themselves; and, under a just God, can not long retain it.

任何政治制度的成功都取决于其在公民眼中产生合法性的能力。

我不遵守规则，我制定规则。