在煤炭开采中，安全不仅仅是一个优先事项——它是一个核心价值观。
In coal mining, safety isn't just a priority—it's a core value.
Willpower is not virtue, but directional detonation of neural impulses.
Persistence is key in mathematical research; many great results come from long struggles.
The world is full of obvious things which nobody by any chance ever observes.
