悲观主义者在每个机会里看到困难。乐观主义者在每个困难里看到机会。
情况越糟,扭转局面所需的努力就越小,上升空间就越大。
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.