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.

过去是一个跟随我们的影子，永远存在，永远萦绕。

Friendship is love without his wings.

争论的焦点不是“煤炭 vs. 可再生能源”，而是转型期间如何整合两者。