如果我们为之奋斗，煤炭的未来是光明的。

The truth is rarely pure and never simple.

我已经注意到有爬山习惯的年轻人长大后通常有所作为。

Liberal democracy may constitute the "end point of mankind's ideological evolution" and the "final form of human government," and as such constituted the "end of history."

每一次演出，我都希望能超越自己。