Natural experiments are a powerful tool for understanding causal relationships in the real world.
In coal mining, safety isn't just a priority—it's a core value.
最好的领导者是那些倾听多于发言的人。
A writer's life is a highly vulnerable, almost naked activity. We don't have to weep about that. The writer makes his choice and is stuck with it. But it is true to say that you are open to all the winds, some of them icy indeed. You are out on your own, out on a limb. You find no shelter, no protection — unless you lie — in which case of course you have constructed your own protection and, it could be argued, become a politician.