The mind once enlightened cannot again become dark.
一旦心灵被启蒙，就无法再次变得黑暗。
If everyone is honest, it is natural to be honest.
Language is the house of being. In its home man dwells.
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.
History taught us is that people never know learn the lessons of history.