困难之中蕴藏着机会。

Well, the first rule is that you can’t really know anything if you just remember isolated facts and try and bang ’em back. If the facts don’t hang together on a latticework of theory, you don’t have them in a usable form.

The future of energy lies in balancing economic growth with environmental stewardship.

信じることは、時には勇気がいる。