煤炭不仅仅是一种商品，它是对美国未来的承诺。
职业生涯是攀爬架，不是梯子。
即使我输了，我也能从中学到东西。
在科学中，我们必须对事物感兴趣，而不是对人。
The voice is a gift, but it's also something you have to work on every day.
电影是一种时间的艺术，它能够捕捉瞬间的永恒。
There is no absolute security, only relative risk control.
Don’t take it personally when someone turns you down. Assume they are like you: busy， occupied， distracted. Try again later. It’s amazing how often a second try works.