选择很简单：要么我们现在保护自然，要么我们以后付出代价。

The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.

Is there such a thing as a cheerful pessimist? That's what I am.

绘画是一种语言，和任何语言一样，它有自己的语法和句法。