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.

我对别人的事情了解得越少，我就越快乐。

The essence of strategy is choosing what not to do.

Management brings benefits, details determine success or failure.