痛苦的源头是无知。
The fountain of content must spring up in the mind, and they who have so little knowledge of human nature as to seek happiness by changing anything but their own dispositions will waste their lives in fruitless efforts.
In nature, we find solace for our souls and answers to our deepest questions.
实现明天的唯一限制是我们今天的怀疑。
You can't build a peaceful world on empty stomachs and human misery.
这就是学习的意义。你突然以一种新的方式理解了你一生都理解的东西。
Efficiency in mining isn't just about cost-cutting; it's about maximizing value while minimizing waste.