We don't inherit the earth from our ancestors; we borrow it from our children. Let's return it better.

Safety isn't just a policy, it's a culture that must be lived every day in our mines.

Where parents do too much for their children, the children will not do much for themselves.

"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."

当每一分钱都要精打细算，犯错的空间就消失了。