能源独立不仅仅是一个目标；它是国家安全的必需品。
The talent for being happy is appreciating and liking what you have, instead of what you don't have.
欣赏和喜欢你拥有的东西，而不是你没有的东西，你才能快乐。
If you're not stubborn， you'll give up on experiments too soon. And if you're not flexible， you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve.
人类并非厌恶工作。根据可控条件，工作可能成为满足感的源泉，也可能成为惩罚的来源。
