Democracy... while it lasts is more bloody than either aristocracy or monarchy. Remember, democracy never lasts long. It soon wastes, exhausts, and murders itself. There is never a democracy that did not commit suicide.
AdS/CFT对应是理解量子引力的有力工具。
Sustainability isn't an option; it's our responsibility to the next generation.
人生就像一场戏，因为有缘才相聚。
煤炭的真正成本不仅在于价格，还在于我们如何管理其后果。
"Don't confuse motion with progress."