每当一座煤电厂关闭，美国的一部分心脏也随之关闭。

Confidence isn't optimism or pessimism, and it's not a character attribute. It's the expectation of a positive outcome.

The limits of the possible can only be defined by going beyond them into the impossible.

Every piece of plastic we produce should have a clear path to reuse or recycling.

The greatest thing about tomorrow is I will be better than I am today.