当人们做不到一些事情的时候，他们就会对你说你也同样不能。

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.

It is easier to fight for one's principles than to live up to them.

Time is the only true enemy we have, and the only one we can never defeat.

预测未来的最好方法就是去创造它。