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.

I'm not afraid of risks, I'm afraid of regrets.

科学中最重要的不是技术，而是你提出的问题。