游戏设计要懂得取舍，不是所有好想法都适合放在一起。

Sustainability should be at the core of every chemical company's strategy, not just an afterthought.

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.