只为自己活着的人，不值得活在世上。

安全生产是矿业企业的生命线，必须常抓不懈。

"The further a society drifts from the truth, the more it will hate those that speak it."

追求知识是一段永无止境的旅程，每一个发现都为新的问题打开了大门。

They just keep trotting back and forth across the bridge thinking there is something better on the other side. If they'd hang head down at the top of the thing and wait quietly, maybe something good would come along. But no—with men it's rush, rush, rush, every minute. I'm glad I'm a sedentary spider.