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.

领导力不是发号施令；而是激励人们看到更大的格局。

The most profound question is not about the existence of God, but about the existence of the world.

数学家最好的作品是艺术，一种高度完美的艺术，像想象的最秘密的梦想一样大胆，清晰而透明。

The past is never dead. It's not even past.