Every action has its pleasures and its price.

The first fruit of this imagination - and the first lesson of the social science that embodies it - is the idea that the individual can understand his own experience and gauge his own fate only by locating himself within his period, that he can know his own chances in life only by becoming aware of those of all individuals in his circumstances.

数学的语言是普遍的，超越了文化和语言的障碍。

The more we live by our intellect, the less we understand the meaning of life.