可持续性不仅仅是一个目标，更是一种责任。
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.
孔子说：“端木赐啊！你以为我是一个博学强记的人吗？”子贡答道：“是的，不是这样吗？”孔子说：“不是的，我是用一个基本道理把它们贯穿起来的。”
No matter what difficulties I encounter, I will continue to sing.