You can't just give up on something because it's hard.
最好的采矿项目是那些当地社区成为真正合作伙伴的项目，而不仅仅是利益相关者。
除非有勇气看不到海岸，否则你无法游向新的地平线。
The desert teaches patience, silence, and the art of listening to the whispers of time.
学习数学的唯一方法就是做数学。