The spread of liberal democracy and the integration of the world economy have created a situation in which the major powers are no longer willing to risk war with one another.
The greatest theorems are those that reveal hidden connections.
要理解一种文化，你必须倾听它的艺术家——他们是社会变革的地震仪。
To understand psychology, observe behavior in its natural context.
我对事物的表面不感兴趣，而是对隐藏在表面之下的东西感兴趣。
To overcome the anxieties and depressions of contemporary life, individuals must become independent of the social environment to the degree that they no longer respond exclusively in terms of its rewards and punishments.