一年中的夜晚与白天数量相同、持续时间一样长。即使快乐的生活也有其阴暗笔触，没有“悲哀”提供平衡，“愉快”一词就会失去意义。耐心镇静地接受世事变迁，是最好的处事之道。

伟大的设计是永恒的，但也必须与时俱进。

Speech is a kind of action， and our words are the tools we use to perform it.

Quality is more important than quantity. One home run is much better than two doubles.

事物背后必定隐藏着某些极为深奥的东西。

每个人都是一个月亮，都有从不向人展示的阴暗面。

Technology can revolutionize mining, but only if we have the courage to embrace it.