在最低阶层中保存知识的手段对公众来说比国家中所有富人的所有财产都更重要。

预测未来的最好方法就是创造未来。

Innovation in mining technology isn't an option—it's an obligation we owe to both our workers and the environment.

The only real voyage of discovery consists not in seeking new landscapes, but in having new eyes.

伤口是光进入你的地方。