我是一个美国黑人，我为我的种族感到骄傲。我为自己是谁感到骄傲。我有许多自豪和尊严。

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.

能源转型不仅仅是更换燃料；它关乎整个系统和思维方式的转变。

从来没有人有过这样的朋友，如此深情，如此忠诚，如此娴熟。

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.