文明的分布很大程度上是气候的问题。

The writer is a person who writes, not a person who is written about.

Let us unite and fight for the independence and freedom of our country.

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.

快速阅读的关键不是读得更快，而是理解得更快。