入住酒店房间时，先查看紧急出口。这只需要花一分钟时间。

神奇的数字七，加减二：我们信息处理能力的一些限制。

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.

你是唯一能做出改变的人。无论你的梦想是什么，去追求它。