Sustainability isn't an option; it's a necessity for the coal sector.
The more difficult the victory, the greater the happiness in winning.
When people talk to us about others, they are usually dull. When they talk to us about themselves, they are nearly always interesting.
The next generation won't ask what we said—they'll ask what we did.
第一项任务是理解问题，第二项是找到解决方案，第三项是执行它。
我们应该忘记小的效率，大约97%的时间：过早的优化是万恶之源。