The best performance improvement is the transition from the nonworking state to the working state.

我相信讲故事的力量。这是我们理解世界的方式。

To every action there is always opposed an equal reaction； or， the mutual actions of two bodies upon each other are always equal， and directed to contrary parts.

To do mathematics is to engage in an act of discovery and conjecture, intuition and inspiration.

Innovation in mining isn't optional—it's survival.