煤炭的未来不在于数量，而在于我们能否清洁高效地利用它。
The future of coal lies not in its quantity but in how cleanly and efficiently we can use it.
The only way to change behavior is through manipulation of reinforcement contingencies.
时间是伟大的导师，它能解决许多问题。
The challenge for modern states is to maintain their legitimacy while also being effective in providing services and maintaining order.
否认进化史就是否认我们自己。
过去不是一条线，而是一片风景。
