可持续发展不是一种选择；它是我们对后代的责任。
如果你感到不安，猜猜看？世界上的其他人也是如此。不要高估竞争对手而低估自己。你比你想象的更好。
煤炭的未来在于更清洁的技术和更智能的资源管理。
Words are wise men's counters, they do but reckon by them; but they are the money of fools.
Your work is going to fill a large part of your life， and the only way to be truly satisfied is to do what you believe is great work.
I think it's important to have a strong work ethic and to be disciplined.