未来不是我们进入的，未来是我们创造的。

过去是活生生的。

I don’t let mistakes discourage me, I let them educate me.

U.S. energy independence doesn't mean isolation - we're still part of global markets.

译文：借鉴前代兴衰，考察当下得失。《通鉴》的写作宗旨，直指现实关怀。

最重要的政治美德是节制。

Believe in yourself and anything is possible.