心理学必须是一门描述的科学，而非解释。

人类是一种非常奇特的生物。他以为自己有一个灵魂，其实他有几十个。

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.