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.

数学思想的真正考验是它能否激发更多的问题。

我们必须不断挑战现状以推动有意义的进步。

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.