煤炭推动了我们的过去，但我们必须诚实地面对它在未来中的作用。

I disapprove of what you say， but I will defend to the death your right to say it.

Own only what you can always carry with you: know languages, know countries, know people. Let your memory be your travel bag.

Your time is limited, don't waste it living someone else's life.

To me, fearless is not the absence of fear. It's not being completely unafraid. To me, fearless is having fears. Fearless is having doubts. Lots of them. To me, fearless is living in spite of those things that scare you to death.

可持续性不仅仅是一个目标，更是一种责任。

过去总是在倾听，等待我们转身，以便在我们耳边低语。