"To define is to limit."
定义就是限制。
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.
采矿业必须在不影响效率的情况下发展以满足可持续发展的需求。
The dead are our silent collaborators in the quest for knowledge.