无论多么复杂或精细，所有行为都可以用刺激和反应来解释。

最可怕的事情是完全接受自己。

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.

一个好的侦探既听噪音，也听沉默。