"The markets are always changing, and so should your strategies."

Energy security is national security.

动态规划理论基于最优性原理，该原理指出，无论初始状态和初始决策如何，剩余决策必须构成关于第一个决策所导致状态的最优策略。

"The power of a story lies in its ability to connect us to the unknown."

Love does not begin and end the way we seem to think it does. Love is a battle, love is a war; love is a growing up.

刚强纯洁的高尚人品，要在烈火般艰苦的斗争中锤炼；惊天动地的丰功伟业，必须在薄冰般险恶的环境里前进。